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RGO Archives contains:
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RGO 6 Papers of George Airy
RGO 61 Papers of the North American Boundary Commission
RGO 62 Papers of the Standards Commission
RGO 66 Kew Observatory papers
RGO 67 Kew Observatory solar photographs
RGO 7 Papers of William Christie
RGO 73 Papers of Warren De La Rue
RGO 74 Papers of Philbert Melotte
RGO 8 Papers of Frank Dyson
RGO 82 Custodians' Report Books
RGO 9 Papers of Harold Spencer Jones
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Papers of Frank Dyson

Title Papers of Frank Dyson
Reference GBR/0180/RGO 8
Creator Dyson, Frank Watson
Covering Dates 1875-circa 1980
Extent and Medium 1 cubic metre; paper
Repository Royal Greenwich Observatory Archives
Content and context

Sir Frank Watson Dyson (1868-1939) was born at Measham, near Ashby-de-la Zouch, on 8 January 1868, the eldest of the four sons and three daughters of the Revd Watson Dyson, a Baptist minister, and his wife Frances (née Dodwell). He spent most of his childhood in Halifax, and was educated at Bradford Grammar School. He joined Trinity College, Cambridge, in 1886, where he was second wrangler in the mathematical tripos in 1899, and first Smith's Prizeman in 1891. He became Fellow of Trinity in 1891, and the following year was awarded the Sheepshanks Scholarship and the Isaac Newton Studentship for research in astronomy. He chose to specialise in the theory of potential, and published his first paper on 'The Potential of Ellipsoids of Variable Densities'. He won acclaim for his work on 'The Potential of an Anchor Ring', which was published in 'Philosophical Transactions' in 1893, and the following year was appointed Chief Assistant at the Royal Observatory, Greenwich. Later in 1894 he married Caroline (Carrie) Bisset Best (d. 1937), with whom he went on to have two sons and six daughters.

Dyson's first major task at Greenwich was to supervise the Observatory's share of the international cooperative scheme for the preparation of a star catalogue and star map of the whole sky - the 'Carte du Ciel'. His work on this subject convinced him of the need for further knowledge of the motion of the stars. As a result, he undertook, with William Grasset Thackeray, a new reduction of the 27,000 observations of more than 4,000 circumpolar stars made by Stephen Groombridge at Blackheath between 1806 and 1819. He was appointed Astronomer Royal for Scotland in 1906, and proceeded to investigate stellar motions in relation to the distance and luminosities of the stars and to their distribution. He was also successful in his attempt to confirm that the phenomenon of star streaming, first shown on 1904 by Jacobus Cornelius Kapteyn, applied equally to stars of large proper motion.

Following the retirement of W.H.M. Christie in 1910, Dyson left Edinburgh to take up the post of Astronomer Royal at Greenwich. His work thereafter was closely linked to that of the Royal Observatory. He extended the functions of the Observatory in many directions, including the determination of stellar magnitudes, effective wavelengths and temperature. He placed importance on the reduction and discussion of meridian observations, with these programmes being chosen especially to meet the needs of practical astronomy. Prior to the First World War he helped to extend and improve the work on magnetic observations. After the war, when electric railways were built close to the Royal Observatory, he negotiated with the railway companies responsible and persuaded them to pay for the transfer of magnetic work to Abinger. He presided over the construction of a new transit circle, which was built to the highest modern standards, and also oversaw the installation of a 36-inch telescope, which was given by W. Johnston Yapp in commemoration of Dyson's work as Astronomer Royal.

Dyson was instrumental in introducing improvements to the Greenwich Time Service. He installed the new free-pendulum clocks as the standards of time, which provided much greater accuracy than their predecessors. As a result of the modernisation, he was able to introduce the 'Six Pips'. The time signal, relayed from Greenwich via the British Broadcasting Corporation, was inaugurated in 1924, and this was augmented in 1927 by the worldwide wireless signal system for shipping, which transmitted from Rugby in Warwickshire.

Another of Dyson's long-standing interests was the solar eclipse. He observed the total eclipses of 1900 (Portugal), 1901 (Sumatra), 1905 (Tunis), 1912 (Paris), 1927 (Gigglewick) and 1932 (U.S.A.), and through this contributed much to the knowledge of the spectra of the Sun's atmosphere and corona. His most significant contribution in this field related to the eclipse of 1919. He recognised that the Sun's central position in relation to the Hyades at the time of this eclipse would afford an unusually good opportunity to test Albert Einstein's prediction of the deflection of starlight in the Sun's gravitational field. With this in mind, he organised two expeditions to study the eclipse - one from Greenwich to Sobral in Brazil, and one from Cambridge, under Sir Arthur Eddington, to Principle in West Africa. The successful results of these expeditions confirmed the prediction and did much to secure general acceptance of Einstein's generalised theory of relativity.

Dyson was at the forefront of the attempt to reconstruct international goodwill and cooperation following the conclusion of the First World War. He was heavily involved in the International Research Council and the formation of the International Astronomical Union, of which he was the President between 1928-1932. He held many other important posts, serving as President of the Royal Astronomical Society between 1911 and 1913, and of the British Astronomical Association, 1916-1918. He was elected a Fellow of the Royal Society in 1901, and was Vice-President, 1913-1914. He was knighted in 1915, and received the K.B.E. in 1926. In 1921 he was awarded a Royal Medal by the Royal Society in 1921 for his investigations of the distribution and movements of stars and the relationship of these to the structure of the Galaxy. He was also selected for the Bruce Medal of Astronomical Society of the Pacific (1922) and the Gold Medal of the Royal Astronomical Society (1925). For many years he was the president of the British Horological Institute, which awarded him their Gold Medal in 1928. He was also twice Master of the Worshipful Company of Clockmakers, and the holder of honorary degrees from the universities of Oxford, Cambridge, Edinburgh, Durham, Leeds, Toronto, Perth and Melbourne.

Dyson produced many publications, a large proportion of which were joint efforts with members of his staff and other scientists. Some of the most notable of his works include 'Determination of Wave Length from Spectra Obtained at the Total Eclipse of 1900, 1901 and 1905' (1906); 'Astronomy' (1910); 'Observations of Stellar Parallax from Photographs' (1925); and 'Eclipses of the Sun and Moon' (1937), with Richard van der Riet Woolley. He also published research papers on the distribution and movement of stellar universe.

Dyson retired as Astronomer Royal in 1933, and spent much of the remainder of his life organising and supervising the removal of the Radcliffe Observatory to Pretoria in South Africa. He died on 25 May 1939 during the homeward voyage from Australia, where he had been visiting one of his daughters, and was buried at sea.

The collection contains a wide range of papers relating to the activities of the Greenwich Observatory during Dyson's time in office, with some additional material from other periods. There is considerable material concerning the internal affairs of the Observatory, including its removal to Herstmonceux Castle, staff, instruments, visitors and Visitations, publications and garden parties. There are papers on the Cape Observatory and Nautical Almanac Office, as well other societies and organisations, such as the Royal Society and Royal Astronomical Society. Other subjects covered include magnetism, the measurement of time, geodesy, eclipses, planetary and lunar theory, stars, comets and meteors.

Most of the papers became part of the Observatory's archives subsequent to Dyson's retirement. Details of later accessions are given with the records concerned.

Access and Use

In English, Fre, Ger, Latin

Please cite as Royal Greenwich Observatory Archives, Papers of Frank Dyson, RGO 8

Further information

A word-processed handlist is available in the Manuscripts Reading Room. Indexed

This description was created by Robert Steiner, Department of Manuscripts and University Archives.

Index Terms
Dyson, Sir Frank Watson (1868-1939) Knight, astronomer
RGO Archives/RGO 8 contains:
1 Correspondence on the Observatory's removal. Correspondence, memoranda and other papers concerning the removal of the Royal Observatory to Herstmonceux, including material on site requirements; lists of sites considered; minutes of the Board of Visitors Committee regarding the need to move the Observatory; correspondence with E.V. Appleton of the Department of Scientific and Industrial Research; and papers on the curtailment of the Observatory's activities due to its move and the Second World War.
1 bundle.
1938–1949
2 Correspondence on staff. Correspondence and memoranda concerning wages, apprenticeships, promotions and the retirement of industrial and non-industrial staff, as well as the applications of watch-makers, repairers and chronometer department staff. The papers include a reference from the Lee Estate Office testifying to D. Weston's reliability with regard to the payment of his rent; correspondence on the recruitment of a Senior Assistant and a Senior Principal Scientific Officer; a report on the Royal Danish Hydrographer's Office; correspondence between the Royal Observatory and the National Physical Laboratory regarding approval for punch-card computing; correspondence on the gift of the 98-inch disk by the Michigan Observatory for use in the Isaac Newton Telescope; correspondence regarding the bomb damage sustained by the Royal Observatory up to October 1940; correspondence on the total solar eclipse in South Africa, 1 October 1940; correspondence concerning the establishment of P.S. Laurie; correspondence regarding the appointment of R. Atkinson as Chief Assistant; and correspondence on the resignation of R. Woolley as Chief Assistant.
7 bundles.
1935–1963
3 National Service and Armed Forces staff records. Records of staff undertaking National Service or serving in the Armed Forces, including registration and enlistment details; a letter from the Admiralty regarding the release of female staff for uniformed service; correspondence detailing the deferment of necessary staff from military service; and correspondence concerning Mr Oliver, a conscientious objector.
1 bundle.
1939–1949
4 Correspondence on the Observatory's removal. Correspondence concerning the removal of the Royal Observatory to Herstmonceux and the proposed new sites, including estimates for the cost of building and re-erecting the telescopes on the new site; minutes of the proceedings of the Board of Visitors of the Royal Observatory, 2 June 1945; a report on the new site by the Board of Visitors; details of inspections of proposed sites; meteorological reports; and correspondence with the Southern Railway Company.
1 bundle.
1938–1946
5 Salary forms. Salary forms D135, indexed under names.
1 bundle.
1938
6 Correspondence on the Observatory's removal. Correspondence regarding the removal of the Royal Observatory to Herstmonceux, including letters from the public concerning the move; correspondence with the Admiralty; material relating to the agreement for the sale of Herstmonceux Castle; correspondence with P. Latham; a letter from the Bishop of Chichester regarding the chapel; correspondence regarding the developments which might prove detrimental to the Observatory; material on the housing of staff; correspondence with Sir Howard Grubb, Parsons and Co. Ltd concerning the dismantling of the telescopes; plans and correspondence on the proposed sites for the telescopes; material concerning the Solar Building and Spectro-heliograph Cellar and the Library; correspondence on the furnishing for the Astronomer Royal's residence; miscellaneous correspondence regarding buildings, finance, alterations, locks, telephones, electricity and fire prevention; minutes of the Royal Astronomical Society's meeting, 9 April 1947, discussing the Observatory's removal; correspondence on the transfer of the Nautical Almanac Office and the Chronometer Depot; and papers concerning soil samples taken on 28 September 1948.
1 bundle.
1946–1949
7 Correspondence on magnetism. Correspondence and related papers concerning magnetism, including the following material:. Correspondence concerning the variation of magnetic charts and records and requests for measurements of magnetic variation, 1947. Correspondence concerning the 'New Zealand Pilot' magnetic observation spots and an extract from 'Nature' regarding 'Earth Currents in Short Submarine Cables', 1946. Correspondence concerning the amendment of the 'Red Sea and Gulf of Aden Pilot', 1944. Correspondence concerning the amendment of 'South American Pilot I', 1944. Correspondence concerning stations in the Pacific Islands occupied by the Carnegie Institute of Washington, 1944. Correspondence regarding 'Pacific Islands Pilot', vol. 2, 1944. Digest of an account of the apparatus for recording rapid changes in the intensity of the Earth's magnetic field at Cheltenham, U.S.A, 1943. Correspondence concerning the position of the magnetic observation spot on Ireland Island, 1942. List of the observation spots of the 'St Laurence Pilot', 1942. Letters on the positions of the observation spots of the 'Mediterranean Pilot', vol. 5, 1942. List of the Carnegie Land Stations occupied more than once, 1942. List of the Carnegie Stations on the South American mainland, 1942. Correspondence with the Compass Department regarding the magnetic survey of the British Isles, 1940. Correspondence concerning amendments of the 'Newfoundland and Labrador Pilot', 1939. Correspondence concerning amendments of the Carnegie Stations on the East African coast, 1939. Correspondence regarding the 'Norway Pilot III' magnetic stations, 1939. Correspondence regarding the 'West African Pilot' magnetic stations, 1939. Correspondence concerning amendment of the 'Mediterranean Pilot', vol. 5, and the 'China Sea Pilot', vol. 5, 1937. Correspondence with the Director of the Compass Department regarding a landing compass, 1937.
1 bundle.
1937–1947
8 Papers on magnetic surveys and investigations. Correspondence regarding magnetic observations, investigations, etc., including the following material:. Correspondence with Professor Blackett regarding the quartz horizontal magnetometer and the balance magnetometer zero designed by D. la Cour, 1947. Material on the agenda of the Commonwealth Conference on 'Defence Science', 1947. List of cometary phenomena by P. Bernard, 1947. Correspondence between Sir Harold Spencer Jones and C.S. Beals regarding the position of the north magnetic pole, 1947. Abstract of 'The Present Location of the North Magnetic Pole...Analysis of observations obtained to October, 1946', 1947. Correspondence between H. Spencer Jones and N. Polunin on the position of the north magnetic pole, 1947. Correspondence with the Scott Polar Research Institute regarding the position of the north magnetic pole, 1946. Copy of Thiesen's observations of the Sun's magnetic field, 1946. Letter regarding the cancellation of the expedition to the Canadian Eastern Arctic, 1946. Correspondence with the Royal Air Force regarding the Canadian Eastern Arctic Expedition, 1946. Minutes of a meeting on terrestrial magnetism held on 14 January 1946. Letter from N. Polunin regarding a meeting with Aries people, 1945. Letter to Professor Chapman from H. Spencer Jones regarding German astronomers, 1945. Letter of 1945 giving the diurnal variations in the Earth's magnetic field for the year 1928. Correspondence with Commodore Hellweg regarding deflection of vertical force at Greenwich, 1945. Minutes of the Air Ministry Meteorological Research Committee's sub-committee to consider the use of the V2 rocket for meteorological purposes, inscribed 'secret', 1945. Correspondence with the Royal Air Force regarding Aries flights, 1945. Correspondence regarding the visit to the Royal Observatory of a representative from the Polar Flight Unit, 1945. Letter to J.A. Fleming regarding magnetic pole positions, 1944. Letter to the 'Encyclopaedia Britannica' concerning magnetic north, 1942. Correspondence with Professor A. Ogg regarding secular variations, 1939. Report by A. Ogg on secular variation stations in South Africa, including charts, 1939.
1 bundle.
1939–1947
9 Correspondence on magnetic instruments. Correspondence regarding magnetic instruments, including a note by W.M. Witchell on the Schuster-Smith coil magnetometer and on Dr Goldie's letter of 14 August 1939, and correspondence with A.B. Gibbons regarding Gibbons's dip instrument for aircraft and ships, 1937.
1 bundle.
1937–1939
10 Correspondence on magnetism. Correspondence and related papers concerning magnetism, including correspondence with the Carnegie Institute of Washington and the Department of Terrestrial Magnetism regarding the interchange of magnetic data; correspondence with Dr G. Swoboda, Lausanne Magnetical Observatory, regarding magnetic character numbers from the Abinger Magnetic Observatory; and quarterly summaries of days classified according to magnetic disturbances. The papers also include the following material:. Letter from Sir Harold Spencer Jones to Dr M.A. Tuve regarding resuming work on the non-magnetic ship 'Research', 1947. Correspondence with M. McCaig regarding his cosmic ray investigations, 1945. Copy of the mean annual values of magnetic declination at the Abinger Magnetic Observatory, 1936-1945, sent to E. Thellier, Paris, 1945. Review of cosmic data from Moscow, with a notification of distribution, 1945. Annual mean values of magnetic elements for the San Fernando Magnetic Observatory for 1942 and 1943, compiled 1944. Chart of tabulations from 24 magnetic observatories for July 1944. 'List of Geomagnetic Observatories and Thesaurus of Values - II' by J.A. Fleming and W.E. Scott, 1944. Correspondence with the International Meteorological Organisation regarding the death of Dr D. la Cour, Director of the Danish Meteorological Organisation, 1942. Correspondence with the International Meteorological Organisation regarding 'Giant Pulsations', with two charts attached, 1942. Correspondence with Dr J. Fleming, International Union of Geodesy and Geophysics Association of Terrestrial Magnetism and Electricity, regarding three-hour range (index K), 1940. Correspondence with G. Van Dijk, Netherlands Meteorological Institute, regarding magnetic data, 1940.
1 bundle.
1937–1948
11 Correspondence on magnetic data. Correspondence and requests concerning magnetic data, including the following material:. Correspondence with the Hydrographer regarding the R.R.S. 'Research', 1948. Correspondence with the Royal Aircraft Establishment regarding titled cameras and with the Hydrographer regarding magnetic variation, 1946. Correspondence with S. Chapman regarding polar flights, 1945, with charts. Correspondence with Dr Fleming regarding the magnetic north pole, 1945. Correspondence with Major-General E. Fedorov of the U.S.S.R. regarding magnetic data, 1943. Correspondence with G.P. Lenox-Conyngham regarding declination charts, 1942. Correspondence with Professor A. Ogg regarding the Magnetic Observatory in the Belgian Congo, 1942. Correspondence of W. Mitchell, Dr W.A. Harwood and others regarding the visit of N.V. Pushkov of the U.S.S.R. to the Magnetic Department at Abinger and concerning Russian publications, 1942. Correspondence concerning the magnetic storm of 1-2 March 1942, including a description prepared by W. Witchell. Correspondence with S. Chapman regarding the examination of the vertical gradients of the three elements X, Y and Z from the Astronomer Royal's analysis, 1942. Correspondence with S. Chapman regarding isoporic charts, 1941-1942. Correspondence with the Cambridge Instrument Company Limited concerning the R.R.S. 'Research' marine inductor, 1939-1940, with a handwritten list by Witchell of the marine inductor and auxiliary apparatus dated 5 December 1946. Correspondence regarding the forwarding of observations made by ships, 1938-1937.
1 bundle.
1937–1948
12 Papers on seismography. Papers relating to seismography, including the following material:. Press cutting on the reporting of earthquakes in Britain, 1952. Papers on the tremors on and about 18 March 1945. Seismographic report of July 1939 (MSI-71) from the Department of Commerce, U.S. Coast and Geodetic Survey. Seismographic Report of August 1939 (MSI-72) from the Department of Commerce, U.S. Coast and Geodetic survey.
1 bundle.
1939–1952
13 Correspondence on magnetism. Correspondence and related papers concerning magnetism, including the following material:. Correspondence regarding instruments, such as declination magnometers, 1951. Correspondence with the National Coal Board regarding Abinger declination traces and magnetograms, 1950. Correspondence with George Phillip and Son Ltd regarding the north magnetic pole, 1950. Programme for the demonstration of the Total Force Magnetic Variometer at Airwork Ltd, Langley Airport, 1948. Notes of the meeting to discuss the research and development of airborne magnetometers, 1948. Correspondence with C. Kutter, Switzerland, regarding the magnetic north pole, 1945. List of the annual mean values of the magnetic elements at the three principal magnetic observatories in the British Isles, 1935-1944, compiled 1945. Correspondence with A. Duperier regarding cosmic rays, 1945. Correspondence with the Geological Survey Office, Dublin, 1944. Correspondence regarding concepts in the subject of magnetism, 1938. Correspondence with the Hydrographer regarding the Barrow dip circle and Unifilar magnometer, 1937. Correspondence with Sir E. John Russell regarding a Romano-British temple of the 1st century A.D., 1937. Correspondence with Vyvyan Richards regarding the life of Columbus, 1937. Correspondence with E.R. Moulton Barrett regarding the Kew Magnemometer, 1937. Correspondence with Luciano Benjamin de Viveiros regarding the riches of the ultraviolet rays, 1937.
1 bundle.
1937–1951
14 Correspondence on R.R.S. 'Research'. Correspondence and related papers concerning the R.R.S. (Royal Research Ship) 'Research'. Some of the principal items are as follows:. (1) Correspondence regarding fittings and instruments for the R.R.S. 'Research'. Correspondence with the Cambridge Instrument Company Ltd regarding the marine earth inductor, 1938. Correspondence regarding the collimating compass, 1938. Report on the magnetic suitability of a D'Arsonval Galvanometer submitted by the Cambridge Instrument Company Ltd for use on the R.R.S. 'Research', 1938. Test of the magnetic properties of materials used in the construction of instruments for the R.R.S. 'Research', 1938. Correspondence with Kelvin, Bottomley and Baird Ltd regarding tubular magnets for the sea deflector, 1938. Approximate programme of the R.R.S. 'Research', 1938. List of instruments supplied by the Cambridge Instrument Company Ltd to be used on the R.R.S. 'Research', 1938. Notes on Messrs Kelvin, Bottomley and Baird Ltd's drawings of magnetic instruments for R.R.S. 'Research', 1937. Drawing of the marine inductor, 1937. Correspondence with the Atlas Norfolk works regarding special hollow cylindrical magnets, including a graph, 1937. Correspondence on the acceptance of the tender from the Precise Instrument Company Inc. for the magnetometer earth inductor, 1936. Correspondence with the Cambridge Instrument Company Ltd regarding the Smith Portable Magnometer, 1936. Photograph of a standard dip inductor showing the micrometer microscopes, 1936. Drawing of a standardising circuit of a potentiometer, 1936. Correspondence with the Hydrographer regarding the engines for the R.R.S. 'Research', 1936. Specification of the instruments for the R.R.S. 'Research', 1936. Plan of the R.R.S. 'Research', 1936. C. Chaffer's notes on magnetic compasses for the R.R.S. 'Research', 1936. Specifications of the marine earth inductor, portable coil magnetometer and magnetometer earth inductor, 1936. Correspondence regarding the status of the non-magnetic ship R.R.S. 'Research', 1936. Correspondence with Professor Rankine regarding a sensitive magnetometer, 1936. Correspondence with the Carnegie Institution of Washington regarding the 'Carnegie', 1935. Correspondence with S. Chapman, Imperial College, regarding the building of the R.R.S. 'Research', and other correspondence congratulating the Admiralty on the proposed non-magnetic ship, 1935. Report of the conference at the Admiralty, 4 October 1934, to discuss the question of the construction of a non-magnetic ship for the continuance of observations to determine variations at sea. 'Determination of the Magnetism of the Earth. Future arrangements', a paper by J.A. Edgell, Hydrographer, dated 14 November 1933. Letter by Sir H. Spencer Jones, 1933, regarding the 'Carnegie' observations. (2) Reports of meetings. Minutes of the meeting held in the Hydrographer's room to discuss the R.R.S. 'Research', 11 November 1935. Minutes of the meeting held at the Admiralty Offices, 26 March 1935, regarding the estimated cost of the construction of a non-magnetic ship.
1 bundle.
1933–1948
15 Correspondence on the Cape Observatory. Official correspondence with Government departments and related papers concerning the Royal Observatory, Cape of Good Hope, including the following material:. Report of His Majesty's Astronomer at the Cape of Good Hope to the Secretary of the Admiralty for the year 1948, compiled 1949. Correspondence regarding the re-filling of the post of His Majesty's Astronomer at the Cape Observatory, 1949. Minute from the Hydrographer referring to a photographic zenith tube, 1949. Correspondence with Douglas D. Robertson of Durban regarding the purchase of the 8-inch telescope mounted at Durban, 1948. Correspondence regarding the reconditioning of lenses for Cape Town, 1948. Correspondence with J. Jackson and the Hydrographer regarding infrared converter tubes, 1948. Correspondence between Sir Harold Spencer Jones and Rear Admiral A.G.N. Wyatt regarding a visit to South Africa, 1948. Correspondence regarding the object glass for the Usher Telescope, 1948. Correspondence between the Astronomical Society of South Africa and H. Spencer Jones regarding the Usher Telescope, 1948. Correspondence regarding the proposal for the Astronomer Royal to visit South Africa, 1948. Correspondence on the annual contribution by the Admiralty to the Radcliffe Observatory, Pretoria, 1948. Correspondence between G. Jowsey of the Admiralty and H. Spencer Jones regarding the 74-inch telescope for the Radcliffe Observatory, 1947. Draft docket from the Hydrographer regarding the Royal Observatory, Cape of Good Hope, and the proposed annual contribution to the Radcliffe Observatory, 1947. Correspondence between H. Spencer Jones and the Admiralty regarding new telescopes, 1947. Correspondence between the Bow Street Police Court and H. Spencer Jones regarding the licence for R.H. Stoy to take a two-year old child to South Africa for adoption, 1947. Correspondence between H. Spencer Jones and the Admiralty regarding the differences between J. Jackson and R.H. Stoy on the proposed areas for the future work of the Cape Observatory, 1947. Correspondence with the Admiralty regarding the disposal of old survey instruments from the Royal Observatory, Cape of Good Hope, 1947. Correspondence between H. Spencer Jones and the Admiralty regarding R.H. Stoy's proposed visit to continental and British observations, 1947. List of the positions of reference stars for the zones -56° to -64° (1950-0), 1947. Correspondence with J. Jackson regarding the printing of annals, catalogues, etc., 1947. Correspondence of J. Jackson with H. Spencer Jones regarding the appointment of A.W.J. Cousins, 1946. Correspondence with the Commander-in-Chief, Simon's Bay, regarding the erection of an observation tube, 1946. Airmail letter from J. Jackson to H. Spencer Jones regarding eclipse instruments, 1946. Letter from H. Spencer Jones to J. Jackson regarding rhythmic time signals, 1945. Letter from J. Jackson to H. Spencer Jones congratulating him on his selection as President of the International Astronomical Union, 1945. Letter from J. Jackson regarding the supply of photographic plates, 1945. Correspondence with the Hydrographer regarding the Observatory and Liesbeek road and river scheme, 1942. Correspondence with Sir H. Spencer Jones regarding the duties of the three labourers at the Cape Observatory, 1937.
1 bundle.
1937–1949
16 Correspondence on the Cape Observatory. Correspondence regarding the retention of the Cape Observatory on Navy votes.
1 bundle.
1939
17 Correspondence on Cape Observatory staff. Correspondence regarding the salaries and appointments of staff at the Royal Observatory, Cape of Good Hope, including letters on the appointment of His Majesty's Astronomer at the Cape on the retirement of J. Jackson from that position.
1 bundle.
1938–1949
18 Correspondence on Cape instruments. Correspondence regarding instruments at the Royal Observatory, Cape of Good Hope, including the following material:. Correspondence between R. Atkinson and J. Jackson regarding an 18-inch lens, 1949. Correspondence between R.H. Stoy and Sir Harold Spencer Jones regarding the pallet stones of the Riefler Astronomical Clock, 1949. Correspondence with Lady Hart Dyke of the Lullingstone silk farm regarding English raw silk cocoons for use as spiderwebs in telescopes and other optical instruments at the Cape Observatory, 1941. Letter from H. Spencer Jones to J. Jackson regarding the insuring of a coelostat, 1939.
1 bundle.
1939–1949
19 Letter on Gill's Cape history. Letter to Dr J. Jackson regarding D. Gill's history of the Royal Observatory, Cape of Good Hope.
1 page.
25 June 1938
20 Correspondence on the Cape Observatory. Correspondence with the Astronomer Royal regarding work at the Royal Observatory, Cape of Good Hope, including the following material:. Correspondence between Sir Harold Spencer Jones, Astronomer Royal, and John Jackson, His Majesty's Astronomer, Cape Observatory, regarding the Coleman 8-inch Cooke Refractor, 1948. Correspondence between H. Spencer Jones and J. Jackson regarding solar photographs, standard frequency transmissions, the war bonus, the end of the war in Europe, rhythmic signals and pendulum clocks, 1945. Correspondence between H. Spencer Jones and J. Jackson regarding the death of Mrs Mullis, bomb damage in the south-east of England, Shortt clocks, quartz clocks, Radcliffe Observatory mirrors and blast damage to the Greenwich Observatory, 1944. Memorandum from the Chief Assistant at the Cape Observatory to J. Jackson regarding sun plates, with an attached list of sun plates, 1944. Correspondence between H. Spencer Jones and Jackson regarding the Knox-Shaw mirror, 1944. Correspondence between H. Spencer Jones and J. Jackson regarding time signals, the Yate Telescope, Shortt clocks, the awarding of the Royal Astronomical Society's Gold Medal to J. Jackson, chronometers and watches, 1943. Correspondence between H. Spencer Jones and J. Jackson regarding the insertion of spectral types in the Cape catalogue of the proper motions of faint stars, 1937.
1 bundle.
1937–1948
21 Papers on the Radcliffe Observatory. Papers relating to Radcliffe Observatory, Pretoria, including the following material:. Correspondence between Theodore Dunham and Sir Harold Spencer Jones regarding plans for a coudé spectrograph at Pretoria, 1951. Correspondence with H. Spencer Jones regarding staff and instruments at the Radcliffe Observatory, 1950. Correspondence with the Trustees of the Radcliffe Trust and letters concerning the Trust, 1950. Letter from H.H. Plaskett, University Observatory, Oxford, to H. Spencer Jones, regarding the Radcliffe Travelling Fellowship appointment of D.W.N. Stibbs, 1950. Letter from H. Spencer Jones to E.L. Pilditch, regarding the Radcliffe Trust charges for the use of the 74-inch telescope, 1950. Correspondence between H. Spencer Jones and the Admiralty regarding the part-use of the Radcliffe telescope by the staff of the Cape Observatory, 1950. Letter from A.D. Thackeray to H. Spencer Jones regarding precautions to be observed when using the 74-inch refractor, 1950. Proposal for a scheme of cooperation between the Royal Observatory, Cape of Good Hope, and the Radcliffe Observatory, Pretoria, 1950. Correspondence between H. Spencer Jones and the Casella and Co. regarding the spectrograph for the Radcliffe 74-inch reflector, 1950. Correspondence with H. Spencer Jones regarding the Radcliffe Trust Observer's Agreement, 1950. Correspondence with E.L. Pilditch regarding the Radcliffe Trust, the Cassegrain mirror and the Cassegrain spectrograph, 1950. Correspondence with Dr John B. Irwin regarding his visit to the Radcliffe Observatory, 1950. Memorandum summarising the considerations to be taken into account concerning the suggested amalgamation (complete or partial) of the Royal Observatory, Cape of Good Hope, with the Radcliffe Observatory, Pretoria, 1950. Correspondence with Professor J.H. Oort, Holland, regarding the Radcliffe 74-inch Refractor, 1950. Letter from R. Woolley, Commonwealth Astronomer, to H. Spencer Jones regarding the vacancy as Chief Assistant at the Radcliffe Observatory, 1949. Confidential letter from D.S. Evans to H. Spencer Jones regarding the vacancy as Chief Assistant at the Radcliffe Observatory, 1949. 'Proposal for a coudé spectrograph to be used in connection with the 74-inch Radcliffe Telescope at Pretoria' by Theodore Dunham, including drawings, 1949. Correspondence with T. Dunham regarding the 74-inch Radcliffe Telescope and coudé spectrograph, 1949. Correspondence with H.H. Plaskett regarding the coudé spectroscope for the Radcliffe Observatory, 1948. Correspondence between Sir Harold Grubb, Parsons and Co. Ltd and H. Spencer Jones regarding the astigmatism in the no. 1 Cassegrain for the Radcliffe 74-inch Reflector, and graphs and reports on the Cassegrain mirror, 1948. Correspondence with A.D. Thackeray regarding the proposed Newtonian Spectrograph for the 74-inch Radcliffe Reflector, including a drawing, 1948. Correspondence between H. Spencer Jones and E.L. Pilditch regarding the contract price of the 74-inch mirror, 1948. Correspondence with E.L. Pilditch regarding the finance of the calibration spectrograph, 1948. Letter from H. Knox-Shaw to H. Spencer Jones regarding the coudé spectrograph, 1948. Correspondence with H.H. Plaskett regarding the Radcliffe Advisory Committee, 1948. Correspondence with Sir Howard Grubb, Parsons and Co. Ltd regarding the packing of the Radcliffe mirror, 1948. Correspondence regarding the appointment of A.D. Thackeray as the First Assistant at the Radcliffe Observatory, 1948. Correspondence regarding Dr McKellar taking up a position at the Radcliffe Observatory, 1947. Letters from H. Knox-Shaw to H. Spencer Jones regarding the construction of an aluminising plant, with a drawing of the aluminising tank, 1947. Correspondence with the David Dunlap Observatory, Ontario, regarding the coating of the Radcliffe mirror, 1947. Correspondence with the Foreign Office regarding the customs duty on the 74-inch Radcliffe Mirror, 1947. Correspondence with C.R. Burch, University of Bristol, regarding Bates' Wave Front Shearing Interferometer in use on mirrors, 1947. Correspondence of H. Spencer Jones regarding the termination of D.S. Evans's appointment at Radcliffe Observatory, 1947. Correspondence of H. Spencer Jones regarding the 74-inch Radcliffe Mirror tests, with an attached photograph, 1947. Correspondence with H. Knox-Shaw regarding the unsuitability of D.S. Evans, 1947. Correspondence between H. Spencer Jones and C.R. Burch regarding tests on the 74-inch Radcliffe Mirror, 1946. Report on the visit of W.H. Steavenson on 1-2 November 1946 to test the Radcliffe 74-inch Parabolic Mirror. Correspondence and photographs from Sir Howard Grubb, Parsons and Co. Ltd regarding the 74-inch Radcliffe Mirror, 1946. Letter from H. Spencer Jones to E.L. Pilditch regarding the setting up of a Schmidt telescope at the Radcliffe Observatory, 1946. Correspondence with the Royal Society regarding the setting up of a Schmidt telescope at the Radcliffe Observatory, 1946. Correspondence with Sir Howard Grubb, Parsons and Co. Ltd regarding W.H. Steavenson's report on the Radcliffe Mirror, 1944. Correspondence with W.H. Steavenson detailing his findings on the 74-inch Radcliffe Mirror, including graphs and Hartmann's tests on the Radcliffe Mirror, 1944. Correspondence with Lord Cottesloe regarding H.G. Scott Barrett, 1942. Report on the progress of the Pretoria 74-inch reflector, 1941. Correspondence between H.G. Scott Barrett and H. Spencer Jones regarding the return of a sheet of independent checks on the apparent places of stars, 1941. Correspondence with Lord Cottesloe regarding insurance against war damage for the 74-inch and subsidiary mirrors, 1941. Correspondence between F.J. Hargreaves and H. Spencer Jones regarding Gaviola's paper and the testing of the Pretoria Cassegrains, including a drawing, 1941. Correspondence with Sir Howard Grubb, Parsons and Co. Ltd regarding the 74-inch mirror, 1941. Minutes of the business transacted by the Radcliffe Trustees at a special meeting on 19 February 1941, regarding the 74-inch mirror, 1941. Extract from the contract between Sir Howard Grubb, Parsons and Co. Ltd and the Radcliffe Trustees, 1941. History of the 74-inch mirror by F.J. Hargreaves, 1941. Letters from Sir Howard Grubb, Parsons and Co. Ltd. to F.J. Hargreaves regarding the shape of the curve of the Radcliffe Mirror, 1941. Copy of the Pretoria 74-inch reflector-knife edge chart, 1941. Correspondence between F.J. Hargreaves and Manville regarding the 74-inch reflector, with diagrams, 1940. Letters from H. Knox-Shaw to the Trustees regarding the total solar eclipse of 1 October 1940. Correspondence between H. Spencer Jones, H. Knox-Shaw and Lord Cottesloe regarding the progress of the 74-inch mirror, 1940. Letters to H. Knox-Shaw from Dunham regarding the 74-inch mirror, 1940. Letter from Sir Howard Grubb, Parsons and Co. Ltd to H. Spencer Jones regarding the progress of the 74-inch mirror, 1940. Correspondence between J.S. Plaskett and H. Spencer Jones regarding the 74-inch mirror, 1940. Letters from H. Spencer Jones to H. Knox-Shaw regarding the possibility of completing the 74-inch mirror at Pasadena, 1939. Letters from S. Adams to H. Spencer Jones regarding the completion of the 74-inch mirror, 1939. Correspondence with J.S. Plaskett regarding the completion of the 74-inch mirror, 1939. Minutes of the business transacted by the Radcliffe Trustees at a special meeting, 4 October 1939, regarding the Radcliffe Observatory. List of the matters to be brought for consideration by the Radcliffe Trustees at a special meeting on 4 October 1939. Correspondence with the Radcliffe Trustees regarding the insurance of instruments against fire and war risks, 1939. Correspondence with the Radcliffe Trustees regarding suspension of work on the 74-inch mirror by Sir Howard Grubb, Parsons and Co. Ltd owing to the war, 1939. '74-inch reflecting telescope of the Radcliffe Observatory, Pretoria', publication No. 12, 1938, reprinted from 'The Engineer'. Report of the meeting of the Radcliffe Advisory Committee held on 14 May 1937. Copy of the sixty-second Annual Report of the Visitors of the University Observatory for 1936. Correspondence with H. Spencer Jones regarding representatives of the University on the Advisory Committee to the Radcliffe Trustees, 1936. Legal document from the High Court of Justice, Chancery Division, 1935, referring to the charitable trust set up by Dr Radcliffe on 13 September 1714. Booklet titled 'Radcliffe Trust. Scheme for the re-establishment and maintenance at Pretoria of the Radcliffe Observatory...formally maintained at Oxford', 1935. Undated copy of the will of John Radcliffe of 13 September 1714.
1 bundle.
1935–1951
22 Correspondence on observatories. (1) Miscellaneous foreign observatories. Letter from R. Atkinson to Colonel Gerado Dianderas, Peru, regarding equipment for the proposed Arequipa Observatory, 1946. Correspondence with the Hong Kong Royal Observatory regarding time signals, 1946. Letter from S. Jarocinski, Warsaw, to Sir Howard Grubb, Parsons and Co. Ltd, regarding the Babia Góra Observatory, 1937. (2) Miscellaneous British observatories. Letters from E.M. Lindsay, Armagh Observatory, to Sir Harold Spencer Jones regarding the future plans of the Armagh Observatory, 1939. Correspondence between Wilfred Hall, Durham University Observatory, and H. Spencer Jones regarding the future of the Durham Observatory, 1938. Report of the Committee of Management of Durham University Observatory for the year ending 31 May 1937. Correspondence with the Librarian, Allhallows School, Rousdon, Devon, regarding the Rousdon Observatory, 1947. Correspondence with the Royal Observatory, Edinburgh, regarding staff, 1945. Correspondence with E.M. Lindsay, Armagh Observatory, regarding the financial status of the Armagh Observatory, 1940. Correspondence from the University of London regarding the appointment of C.C.L. Gregory as Honorary Director of the University Observatory, 1939. (3) Cambridge University and the Solar Physics Observatory. Correspondence with Professor R.O. Redman regarding the scrapping of the transit circle at Cambridge, 1947. Correspondence between Arthur Beer and H. Spencer Jones regarding Beer's appointment as the Senior Observer at the Solar Physics Observatory, 1947. Correspondence between F.J.M. Stratton and H. Spencer Jones regarding the International Union of the History of Science and the International Council of Scientific Unions, 1947. Correspondence between A.D. Thackeray and H. Spencer Jones regarding the star Cassiopeia, 1946. Correspondence regarding a meeting of the Observatories Syndicate on 30 November 1946, and decisions taken by the Executive Committee, also including the annual report. Correspondence regarding a meeting of the Observatories Syndicate, 14 August 1946, regarding the report of the Joint Committee appointed by the Faculty Boards of Physics and Chemistry and of Geography and Geology to advise on the future of meteorological studies at Cambridge University, 1946. Correspondence with Cambridge University regarding the Plumian Professorship of Astronomy and Experimental Philosophy, 1946. Annual Reports of the Solar Physics Committee, Cambridge University, 1940 and 1943-1945. Correspondence with Professor S. Chapman regarding the Directorship of the Cambridge Observatory, 1945. Income and expenditure accounts of the Department of Astrophysics, Faculty of Physics and Chemistry, 1938-1939, 1939-1940, 1942-1943 and 1943-1944. Correspondence with W. Moss regarding magnetic storms, 1942. Cambridge University Annual Report of the Committee of Geodesy and Geophysics, 16 May 1942. (4) Canadian, South African and New Zealand observatories. Correspondence between C.S. Beals, Dominion Astronomer, and H. Spencer Jones regarding plans for a Magnetic Observatory at Baker Lake, 1947. Correspondence between Nicholas Polunin and H. Spencer Jones, with an attached newscutting regarding new magnetic north poles, 1947. Correspondence between the Union Astronomer, South Africa, and H. Spencer Jones regarding the visit of Finsen and Hers to the Royal Observatory, Greenwich, 1947. Letters from D.H. Sadler to J. Jackson, H.M. Astronomer, Royal Observatory, Cape of Good Hope, 1947, regarding planets at transit, 1949-1952. Correspondence between A.C.M. Lillie, Preston, Lancashire, and H. Spencer Jones regarding the helio-chronometer made by Messrs Pilkington and Gibbs of Preston, with an attached drawing of a helio-chronometer by A.C.M. Lillie, 1947. Dominion Observatory Bulletin R-30, Wellington, 1944, reprinted from the Annual Report of the New Zealand Department of Scientific and Industrial Research, 1944-1945. Correspondence between Sir Howard Grubb, Parsons and Co. Ltd and H. Spencer Jones regarding the Franklin Adams lens, 1946. Correspondence with Dr van den Bos regarding minor planet observations, 1946. Letter from H. Spencer Jones to Brigadier B.F.J. Schonland regarding the award of the Hughes Medal of the Royal Society, 1945. Correspondence with Dr van den Bos regarding short-wave signals, 1945. Correspondence with the Carter Observatory, New Zealand, regarding the driving clock for the 20-inch reflector, 1945. Letter from H. Spencer Jones to Dr van den Bos regarding the examination of Pluto for signs of a visible disk, 1942. Correspondence between Dr van den Bos and H. Spencer Jones regarding the Moon's phases, 1942-1946, and the effect the war is having on Britain and Holland, 1941. Report of the Dominion Observatory for the year ending 31 December 1941. Department of Scientific and Industrial Research, Dominion Observatory, New Zealand, Bulletin T-17, New Zealand Mean Time, 1941. Report of a technical sub-committee relating to the Carter bequest, set up to consider and report on a suitable scheme for equipping the Carter Observatory and the probable cost of this scheme, 1937. Correspondence with Sir Howard Grubb, Parsons and Co. Ltd regarding a telescope for Wellington, New Zealand, 1936. Correspondence between E. Marsden and H. Spencer Jones regarding the Carter bequest, 1936. (5) Australian observatories. Correspondence of H. Spencer Jones with H.V. Johnson, Minister for the Interior, Canberra, regarding latitude variation, 1948. Correspondence between Kerr Grant, Professor of Physics, University of Adelaide, and H. Spencer Jones regarding the resumption of latitude variation observations at Adelaide, 1948. Correspondence between the Society for the Protection of Science and Learning and H. Spencer Jones regarding the vacancy for an astrophysicist in Australia and requesting information on the suitability of G.H. Archenhold for the post, 1947. Minutes of the meeting of the Australian National Committee on Astronomy held at the Commonwealth Observatory, Canberra, 12 February 1947. Report on the Commonwealth Observatory by H. Spencer Jones, 7 March 1947. Correspondence with R. Woolley, Commonwealth Astronomer, regarding H. Spencer Jones' visit to Australia and the zenith tube, 1946. Correspondence between R. Woolley and H. Spencer Jones regarding the Melbourne astrographic zones and the deaths of Dr Baldwin and Mr Rimmer, 1945. Correspondence between R. Woolley and H. Spencer Jones regarding the Melbourne quartz clocks, 1945. Report of the Director of the Commonwealth Solar Observatory for the period 1 May 1940 to 31 January 1944. Correspondence with R. Woolley regarding the Adelaide Zenith Telescope, 1944. Correspondence with the Bank of New South Wales regarding the Crohamhurst Observatory, Queensland, and long-range weather forecasting, 1944. Correspondence between R. Woolley and H. Spencer Jones regarding the closure of the Melbourne Observatory, 1943. Correspondence between T. Smith, National Physical Laboratory, and H. Spencer Jones regarding 'Systematic Constructional Tables for Thin Cemented Aplanatic Lenses', 1941. Correspondence between R. Woolley and H. Spencer Jones regarding the Optical Munitions Panel, 1941. Telegram from H. Spencer Jones to Dodwell, Adelaide Observatory, regarding observations, 1940. Telegram from Dodwell to H. Spencer Jones regarding continuity of observations, 1940. Correspondence of R. Woolley with H. Spencer Jones regarding the internment of Brück, 1940. Correspondence between Dodwell and H. Spencer Jones regarding the construction of a photographic zenith telescope at Adelaide, 1940. Correspondence with Sir Harold Grubb, Parsons and Co. Ltd on the zenith telescope, 1939. Correspondence with Dodwell regarding the future work at Adelaide Observatory, 1939. Card announcing the retirement of W. O'Leary from the Riverview College Observatory, 1938. Folder containing correspondence on the Mount Stromlo Observatory, regarding appointments, equipment, etc., 1924-1929. Folder containing correspondence between W.G. Duffield and Sir Frank Dyson regarding the proposed closure of the Sydney Observatory, 1925. Newspaper cutting referring to the Sydney Observatory, 1925. (6) Norman Lockyer Observatory. Correspondence between Captain W.N. McClean and H. Spencer Jones regarding the appointment of members on the new council for the Norman Lockyer Observatory Corporation, 1947. Notice of the Extraordinary General Meeting of the Norman Lockyer Observatory Corporation on 12 December 1947. Minutes of council meetings held on 30 July 1936, 12 May 1938, 15 November 1938, 9 March 1939, 9 November 1939, 9 May 1940, 10 May 1946, 14 February 1947 and 31 March 1946. Memorandum from D.L. Edwards regarding the future of the Norman Lockyer Observatory, 1946. Correspondence between McIntyre and H. Spencer Jones regarding the presentation of a Shortt-Synchronome Clock to the Norman Lockyer Observatory, 1944. Correspondence regarding the Corporation's need for higher land, 1943. Correspondence with D.L. Edwards regarding cooperation in research with the Kodak Research Laboratory, 1942. Correspondence between D.R. Barber and H. Spencer Jones regarding the brightness of the night sky, 1941. Review of the work of the Norman Lockyer Observatory, 1941. Correspondence with H. Spencer Jones regarding the work of Dr Alter at the Norman Lockyer Observatory, 1940. Correspondence of D.R. Barber with H. Spencer Jones regarding Barber's colour-temperature programme, 1940. Correspondence with M.R. Miller, regarding a grant of £300 per annum for research work at the Norman Lockyer Observatory, 1940. Brief financial statement of the Norman Lockyer Observatory, 1940. Correspondence between McClean and H. Spencer Jones regarding a grant from the Pilgrim Trust, 1939. Material on the scheme for the memorial to W.S.J. Lockyer, 1938. Correspondence between D.L. Edwards and Greaves regarding colour temperature work, 1937. Report regarding the purchase of a microphotometer, 1937. Notes by D.L. Edwards regarding the purchase of the sensitometer, 1936. Copy of the agreement between Sir Richard Arman Gregory and the Hill Observatory Corporation, 1936.
1 bundle.
1924–1948
23 Papers on observing eclipses. Correspondence regarding finance and equipment for observing eclipses, including the following material:. (1) General correspondence. Correspondence between R. Atkinson and Dr M.R. Madwar, Helwan Observatory, Egypt, 1950, regarding the programme for the eclipse of 1952. Correspondence with Professor Stratton, 1950, regarding the eclipse of 1952. Correspondence with Professor H.A. Bruck, 1950, regarding the loan of an 8-inch coelostat for the eclipse in 1952. Climatological report from the Sudan Meteorological Service, 1950. Minutes of the Joint Permanent Eclipse Committee, 10 November 1950. List of the sites for observing the total eclipse of 25 February 1952, compiled 1950. Correspondence between R. Atkinson and Sir Harold Spencer Jones regarding finance for the eclipse programme, 1950. Minutes of the Joint Permanent Eclipse Committee, 24 March 1950. Correspondence with the Naval Research Laboratory, 1950, regarding the solar eclipse of 12 September 1950 and sunspots, 11-12 September 1950. Correspondence between R. Atkinson and C.B. Watts regarding formulae for the differential correction of librations and lunar limb profiles, 1950. Detailed meteorological data from the Helwan Observatory, 1950, relating to the 1952 eclipse. 'Investigation of Radio Emission from the Sun During the total Solar Eclipse of May 20, 1947', by S.E. Haikin and B.M. Chikhachev, 1949. Correspondence with C.E. Hesthal, 1949, regarding a photograph of Comet 1948 L close to the totally eclipsed Sun on 1 November 1947. Correspondence regarding R. Atkinson's visit to Kenya for the eclipse of 1 November 1948 and concerning a new eclipse technique, 1948. Report on suggested radio observations during the solar eclipse of 1948. Correspondence regarding compensation for Dr A. Hunter due to an aircraft crash at Dakar, 1947. Correspondence with the British Legation, Asuncion, and the Stockholm Observatory regarding the total eclipse of the Sun of 20 May 1947. Airmail letter from the Broadcasting Department, Gold Coast, regarding the total solar eclipse, 1947. Correspondence with R.H. Stoy regarding the 1940 solar eclipse instruments, 1946, including a list of instruments for shipment to Greenwich. Correspondence with A. Mikhailov, Moscow, regarding an eclipse, 1945. (2) Glass prisms. Correspondence with Adam Hilger Ltd regarding glass prisms, including a leaflet on Muller Vacuum Thermoelements, 1938. Correspondence with Ross Ltd regarding quotations for 60° and 30° prisms, 1935. Correspondence of R.O. Redman, Solar Physics Observatory, with R. Woolley, regarding prisms, 1935. (3) Portable mounting for the 13-inch astrographic telescope. Correspondence between J. Jackson and H. Spencer Jones regarding the portable mounting for the 13-inch astrographic telescope, 1940. Correspondence with J. Jackson regarding eclipse expenses, 1940. Correspondence with Sir Howard Grubb, Parsons and Co. Ltd regarding the field mounting for the telescope, 1940. (4) Solar eclipse of 1940. Correspondence with Hogg, Robinson and Chapel-Care Ltd regarding the shipment and insurance of equipment for Cape Town, including insurance policies and H.M. Customs and Excise Shipping Bills (duplicates) for the total eclipse, 1940. (5) Eclipse accounts. Lists for the Field Equatorial and contents of cases listed, 1940. Correspondence with H. Spencer Jones, 1940, regarding the expenses incurred in South Africa in the observation of the eclipse of the 1 October. Correspondence with J. Jackson regarding the eclipse of 1940. Correspondence with Dr A. Thackeray regarding Hill's quartz spectrograph, 1940. Correspondence with R. Woolley regarding the finance and equipment of the 1940 Commonwealth Eclipse Expedition. Correspondence with H. Knox-Shaw and J.A. Carroll, University of Aberdeen, regarding equipment for the 1940 eclipse expedition. Correspondence with Dr van der Bilt regarding the 1940 eclipse in South Africa, 1939. Correspondence regarding the financing of the Cape-Radcliffe Expedition to Calvinia, 1939. Ccorrespondence with J. Jackson, Cape of Good Hope, regarding the effect the outbreak of war would have on the eclipse expedition from England, 1939. Correspondence with J. Jackson regarding arrangements for the 1940 eclipse, 1939. Correspondence with Adam Hilger Ltd regarding the spectroscope slit, 1938. Proposed programme for the total solar eclipse of 1 October 1940, compiled 1938. Draft report of Commission 13, on eclipses, 1938. Papers showing the star field for the eclipse of 1 October 1940, compiled 1938. Proposed spectroscopic programme for the South African eclipse of 1940, compiled 1938.
1 bundle.
1935–1950
24 Papers on the Nautical Almanac Office. Correspondence and related papers concerning the Nautical Almanac Office, including the following material:. (1) Staff and equipment. Monthly statements by H.G. Scott Barrett of outside work done for the N.A.O., 1943-1945. Correspondence between D.H. Sadler and Sir Harold Spencer Jones regarding the increased accuracy in the transit of the first point of Aries, 1940. Correspondence regarding unestablished service counting for superannuation purposes, 1940. Correspondence with the Hydrographer of the Navy regarding N.A.O. staff liable for military service, 1940. Correspondence with D.H. Sadler regarding staff and work at the N.A.O., 1940. Correspondence with the Admiralty regarding the transfer of the N.A.O. to Devonport House, 1939. Correspondence between the Hydrographer and H. Spencer Jones regarding the tenancy of the accommodation of the Seamen's Hospital Society in Devonport House, 1939. Correspondence regarding salary scales, 1939. Correspondence with the Hydrographer listing the increase in the responsibilities of the N.A.O., 1938. General correspondence regarding staff and salaries, 1938. Correspondence with the Hydrographer regarding the relationship between the Royal Observatory and N.A.O., 1937. Particulars of the candidates to be interviewed by the Selection Board for appointment to the post of Assistant, 1937. Correspondence regarding the reorganisation of the N.A.O., 1937. Correspondence regarding appointments at the N.A.O., 1934. Draft report on the N.A.O., 1930. Letter appointing Dr Comrie as Superintendent, 1930. (2) Temporary staff. Correspondence regarding the appointment of temporary staff, 1942-1947, including the following material:. Memorandum on immediate staff requirements, 1945. Correspondence on the suggested appointment of W.E. Candler, 1945. Correspondence between D.H. Sadler and H. Spencer Jones, 1944. (3) Miscellaneous correspondence. Correspondence regarding staff from the N.A.O. gaining experience of navigational problems on surveying ships, 1948. Correspondence between D.H. Sadler and H. Spencer Jones regarding the apparent change in the rate of rotation of the Earth around the middle of September 1945. Correspondence with Count Potocki of Montalk regarding astrology, 1939. Correspondence of Sir H. Spencer Jones regarding publications received by the N.A.O., 1938. Correspondence with D.H. Sadler regarding the National Accounting Machine, 1937. Notes on the Occultation Machine, 1937. Correspondence with the Science Museum, 1937.
1 bundle.
1930–1948
25 Papers on the Nautical Almanac Office. Correspondence with the Nautical Almanac Office and related papers, including the following material:. (1) General correspondence. Correspondence with D.H. Sadler regarding the prices of N.A.O. publications, 1948. Correspondence between R. Atkinson and Professor Sollenberger regarding latitude changes, 1947. Memorandum of discussions and decisions involving Dr G.M. Clemence of the American N.A.O. and D.H. Sadler of the British N.A.O., 1947. Correspondence with D.H. Sadler, including a short memorandum on 'Copyright in the Nautical Almanac', 1947. Correspondence with H. Spencer Jones regarding the employment of H.G. Scott Barrett at the Royal Observatory, 1941. Reference sheet sent from the N.A.O. to the Astronomer Royal regarding the destruction of. N.A.O. publications by enemy action, 1940. Correspondence with the Hydrographer regarding the damage done by incendiary bombs to Messrs J.G. Hammond and Co., printers of various publications for N.A.O., 1940. Correspondence on publications lost due to fire, 1940. Correspondence with D.H. Sadler, 1940, regarding a request from Professor Schorr for copies of the 'Nautical Almanac' for 1941. List of the 'Distribution of the Nautical Almanac to Enemy of Occupied Countries', 1940. Correspondence with J.F. Hellweg, Washington, regarding data for the satellites of Saturn, Uranus and Neptune, 1938. List of firms or individuals that reproduce materials from the 'Nautical Almanac', with remarks on the same, 1938. Correspondence between the Astronomer Royal and the Hydrographer regarding 'civil', 'nautical' and 'astronomical' twilight, 1937. (2) Air Almanac. Correspondence between D.H. Sadler and H. Spencer Jones regarding a new navigational instrument known as Astrograph Mark I, 1940. Correspondence with D.H. Sadler regarding the publication of the 'Air Almanac' in the United States, 1939. Correspondence between D.H. Sadler and Wing Commander P.H. Mackworth regarding the publication of the 'Air Almanac' and astronomical navigation tables, 1938. Correspondence between D.H. Sadler and H. Spencer Jones regarding the altitude-azimuth tables and cooperation with the United States, 1938. Correspondence with H. Spencer Jones regarding new proposals for the 'Air Almanac', 1938. . Correspondence regarding the altitude-azimuth tables, with a summary of decisions made at the meeting of 8 November 1937. Correspondence regarding the 'Air Almanac', with a draft explanation and illustrations, 1937. Letter of approval from the Hydrographer to the Astronomer Royal regarding the preparation of an air almanac and altitude and azimuth tables for use in long distance flights, 1937. Correspondence concerning the altitude-azimuth tables, with a N.A.O. programme relating to possible cooperation with the U.S. Hydrographic Department in the production of the tables, 1937. Criticisms by the N.A.O. of the altitude-azimuth tables in H.O. 214, 1937. Correspondence regarding the altitude-azimuth tables, with preliminary estimates from D.H. Sadler, 1937.
1 bundle.
1937–1948
26 Papers on the Nautical Almanac Office. Correspondence with the Nautical Almanac Office and related papers, in fifteen sections, including the following material:. (1) Astronomical navigation tables. Correspondence with D.H. Sadler regarding George G. Hoehne's 'Practical Celestial Air Navigation Tables', 1943. Correspondence with D.H. Sadler regarding astronomical tables, 1942. Memorandum by Sadler titled 'Polar Navigation. A Device for Drawing Position Lines within 15 Degrees of the Pole', 1942. (2) Five-figure tables. Correspondence concerning five-figure trigonometrical tables, 1947. Arrangements for proof-reading, 1947. (3) Apparent places of fundamental stars. Copy of a letter from D.H. Sadler to Dr Subbotin, U.S.S.R., proposing an extension of the programme of apparent places of stars undertaken by the Institute for Theoretical Astronomy in Leningrad, 1948. 'Computation and Checking of Apparent Places of Stars', a paper issued by the N.A.O., 1944. (4) Miscellaneous. 'Supplement to the Astronomical Ephemeris and the American Ephemeris', proposals put forward for discussion by D.H. Sadler, 1956. Summary of 'The Unification of the Nautical Almanac and the American Ephemeris' by D.H. Sadler, 1954. Correspondence with Sir Harold Spencer Jones, 1953, who was seeking Admiralty approval for the publication of 'Planetary Co-ordinates for the years 1960-1980 referred to the equinox of 1950.0.' and of a joint supplement to the 'Nautical Almanac' and American Ephemeris for the years 1952-1959. Copies of two memoranda by D.H. Sadler on the aforementioned publications, 1953. 'The Star Almanac for Land Surveyors for the year 1950...Prepared by H.M. Nautical Almanac Office', 1948. List of observations of minor planets made at the Union Observatory, Johannesburg, with the Franklin Adams Star Camera, 1946. (5) International exchange of material. Letter from Helsinki Observatory, 1946, thanking H. Spencer Jones for the copy of the last nine months of 'Kleine Planeten' for 1946. (6) France. Correspondence with A. Danjon, Director of the Paris Observatory, regarding observations, 1956. (7) Stockholm. Correspondence with the Stockholm Observatory, 1944-1946, including the following material:. Correspondence with Professor Lindblad, Director of the Stockholm Observatory, regarding observations and the exchange of data, 1944-1946. Correspondence with Professor Lindblad, 1945, regarding the election of H. Spencer Jones as a foreign member of the Swedish Academy of Sciences and also concerning the death of Sir Arthur Eddington. (8) U.S.S.R. Correspondence with the U.S.S.R., 1946-1949, including the following material:. Correspondence between Dr Subbotin, Director of the Institute of Theoretical Astronomy, Leningrad, and H. Spencer Jones regarding the exchange of material, 1943-1944. Translation by Miss F.M. McBain, 1947, of the last paragraphs of the preface to the 'Annuaire Astronomique' of the U.S.S.R., 1946. Correspondence of 1946 regarding asteroid ephemerides for 1947 and ephemerides of minor planets. Copy of a letter from H. Spencer Jones to A.A. Mikhailov, 30 August 1945, regarding the total solar eclipse on 9 July 1945. (9) Washington. Correspondence with Washington, 1943-1948, including the following material:. Correspondence with Captain Hellweg and W.J. Eckert regarding the exchange of data, 1943-1944. Correspondence with the United States Naval Observatory regarding the physical ephemeris of the Moon, 1948. (10) Germany. Correspondence with Germany, 1945-1948, including the following material:. Correspondence with Professor A. Kopff regarding the exchange of data, 1947-1945. Correspondence with Germany concerning comets, 1947. Correspondence with the Control Commission for Germany regarding astronomical activities in Germany, 1946. Correspondence between H. Spencer Jones and Sir Alfred Egerton regarding the Rechen Institute being divided into two sections, one at Heidelberg in the America zone, the other in Berlin in Russian Zone, 1946. Correspondence regarding the proposed re-allocation of astronomical computations normally undertaken by the Berliner Jahrbuch, 1945. (11) Work of H.M.S. 'Vernon' . Correspondence regarding 'H.M.S. Vernon' and the Department of Scientific Research and Experiment at the Admiralty, 1940-1942, including the following material:. Correspondence with H. Spencer Jones regarding naval mine-sweeping, 1940. Details of a calculation for work on H.M.S. 'Vernon', prepared by D.H. Sadler, 1940. (12) 7- and 8-figure tables. Correspondence regarding the publication of 7- and 8-figure tables with argument in arc, including the following material:. Memorandum by D.H. Sadler on seven-figure trigonometrical tables with argument in seconds of arc, 1949. Memorandum by D.H. Sadler on seven-figure trigonometrical tables with argument in seconds of arc, regarding both 7- and 8-figure tables, 1939. Correspondence between E.S. Pearson and the Astronomer Royal regarding the computation of the 7- and 8-figure tables, 1939. Correspondence with D.H. Sadler regarding 'Tracts for Computers No. XXIII' and Dr L.J. Comrie's work, 1939. Correspondence with Professor Peters, Berlin, regarding the 7- and 8-figure tables and the mention of the Nautical Almanac Office on the title page, 1938. Paging scheme and introduction to 7-figure trigonometrical tables for every second of time, 1938. Specimens of various types to be used in the 7-figure trigonometrical tables, 1938. (13) Miscellaneous correspondence . Memorandum by D.H. Sadler on 'The Calculation of Decca Lattices. The Extent of N.A.O. Responsibilities', 1955. Memorandum by the Astronomer Royal on 'The Conformity of the American Ephemeris and the (British) Nautical Almanac', 1954. Correspondence with the Hydrographer regarding the depositing of Crown copyright tables with the Royal Society, 1950. Correspondence with the Director of Scientific Research regarding the evacuation of an enemy technicians to the United Kingdom, 1945. 'Depression of Sun Below Horizon. Latitudes N.45° - N.60°', prepared by the N.A.O., 1944. Correspondence regarding the computing equipment for the Royal Aircraft Establishment, Farnborough, 1944. Report on the proposal that the N.A.O. should undertake computational work for the Director of Scientific Research, 1944. Correspondence between D.H. Sadler and H. Spencer Jones, 1939, regarding the second volume of 'Planetary Co-ordinates' for the equinox of 1950. (14) Work for other departments. Papers on sound-ranging problems and work for the Ordnance Board, 1942-1950, including the following material:. 'Computation of wind and temperature graphs for use in the gun sound ranging - report', 1942. Correspondence on the proposal of a star almanac for land surveyors, 1948. (15) Scientific Computing Advisory Committee. Report on the work being done by the Scientific Computing Advisory Committee, 1945. Statement of the organisation of the N.A.O. and the Admiralty Computing Service, 1944. Copy of the Department of Scientific and Industrial Research 'Report of Interdepartmental Technical Committee on a Proposed Mathematical Station', 1944. Copy of the Department of Scientific Research and Experiment, Admiralty Computing Service, third report on activities, 31 January 1944. Summary of the position of computational work for the Department of Scientific Research, Advisory Committee on Scientific Computing, at the National Mathematical Laboratory, 1943.
1 bundle.
1938–1956
27 Correspondence on the Nautical Almanac Office. (1) Miscellaneous correspondence and related material concerning the Nautical Almanac Office. There are papers regarding staff finance, including concession passes issued to staff, salaries, reference sheets and data supplied by the N.A.O. to H.G. Barker, Secretary and Cashier for the Royal Observatory, for making payments. There is also correspondence regarding Hollerith equipment for the N.A.O.; telegrams from the Colonial Office regarding Greenwich Mean Time and British Summer Time in the colonies; and correspondence concerning publications. The papers also include the following material:. Correspondence with the English Electric Company Ltd regarding the Digital Computer Deuce, 1956. Reference sheet sent by the Astronomer Royal to the Hydrographer on the 'Apparent Places of Fundamental Stars', 1956. Correspondence between R. Atkinson and D.H. Sadler, 1955, regarding how the year from mean vernal equinox to mean vernal equinox differs from the mean tropical year for the years 1767 to 1770. Second report by D.H. Sadler on punched-card installations, 1952. Correspondence with the Commanding Officer, H.M.S. 'Devonshire', regarding H.O. 214 - 'Tables of Computed Altitude and Azimuth', 1951. 'Demonstration of the Hollerith Machines', a paper by D.H. Sadler, 1950. Copy of the general instructions drawn up for Mr Harding when on detached duty on H.M.S. 'Dalrymple', 1949. Booklet on 'The Printing of Mathematical Tables' by W.J. Eckert and Ralph F. Haupt, 1947. Report of a visit to the U.S. Naval Observatory on 22 January 1947, relating to the Hollerith equipment, 1947. Reference sheet from the Hydrographer regarding the pricing of the 'Nautical Almanac', 1946. Correspondence with K. Mayrhofer, Austria, regarding the orbit of small planets, 1946. List of annual and periodical publications purchased through His Majesty's Stationary Office by the Royal Observatory, Greenwich, 1945. Copy of the report by D.H. Sadler on the visit of the Royal Air Force Specialist Navigation Course, 1945. Correspondence between the N.A.O. and the Astronomer Royal regarding the 'Astronomical Position Line Tables' by J. Garcia, 1945. Correspondence between D.H. Sadler and H. Spencer Jones regarding the 'Matthews Potentiometer', 1945. Correspondence between Private C.E. Johnson and H. Spencer Jones, 1944, regarding the heliometric coordinates of the planets of the solar system from 1800-2000. Correspondence between D.H. Sadler and H. Spencer Jones regarding the exchange of the 'Nautical Almanac' and advance proofs, 1944. Table showing the standard times kept in the Dominions in relation to London time, with footnotes showing the alterations in the Dominions during the war, 1944. Report on the visit of the Royal Air Force Specialist Navigation Course to the N.A.O., 1944. Correspondence with D.H. Sadler regarding the summertime in Canada, Australia, New Zealand and the Union of South Africa, 1944. Correspondence regarding the introduction of summertime at Cyprus at midnight, Greenwich Mean Time, 31 March 1943, to remain in force until midnight, Greenwich Mean Time, 31 October 1943. Correspondence between Sir Cecil Clementi and H. Spencer Jones regarding the Chinese calendar of the 8th century B.C. and the chronology of the Olympic festivals, 1942. Correspondence between D.H. Sadler and H. Spencer Jones regarding the computation of geodetic distances, 1941. Correspondence regarding blackout times, 1941. Correspondence between G.E. Ellwood and H. Spencer Jones, 1941, regarding the phases of the Moon for 1942, for the compilation of the Masonic Calendar. Lists of the Moon's phases for the years 1942-1946, compiled 1941. Correspondence between Union Astronomer and H. Spencer Jones, 1941, regarding the Moon's phases. Correspondence with the N.A.O. regarding a fire at Hammonds, printers for the N.A.O., and the loss of material, 1940. Copy of the N.A.O. Contingency Account, 1939-1940. Correspondence with A. and F. Pears Ltd regarding information for 'The Pears' Encyclopaedia', 1939. (2) Papers regarding work carried out by the Royal Observatory on behalf of the N.A.O. for other departments, including the following material:. Correspondence of 1956 regarding imprest advances relating to services carried out by the N.A.O. for the Air Ministry, 1955-1956. Correspondence of 1955 regarding the second edition of A.P. 3270, Vol. 1, relating to work done by the N.A.O. for the Air Ministry. Correspondence regarding Dr C.E. Adams of the New Zealand Astronomical Society and occultation predictions for Wellington and Dunedin, 1941-1944.
1 bundle.
1939–1956
28 Correspondence on the Royal Astronomical Society. Correspondence and related papers concerning the Royal Astronomical Society, including the following material:. (1) General correspondence. Correspondence between Sir Harold Spencer Jones and Miss Garratt, Royal Astronomical Society, regarding the Padbury chronometer, 1949. Correspondence regarding the R.A.S. Finance Committee, 1949. Correspondence between H. Spencer Jones and Dr G. Merton regarding reductions of the Stanley Williams variable star observations, 1949. Correspondence regarding the Stanley Williams Variable Star Committee, 1949. Correspondence between H. Spencer Jones and Messrs Taylor and Francis regarding the increased charge for the R.A.S. publications, 1948. Report of the General Board, University of Cambridge, on the future of the Department of Geodesy and Geophysics and on the constitution of the Committee for Geodesy and Geophysics, 1948. Annual report of the Department of Geodesy and Geophysics, University of Cambridge, 1947-1948. Correspondence with H. Spencer Jones regarding the discussion on the 'Figure of the Earth', 1948. Correspondence with H. Spencer Jones regarding the secretaryship of the R.A.S., 1948. (2) Notice of non-committee meetings. Note on the administration and finance of the R.A.S. by W.H. McCrea, 1948. Correspondence with A.D. Thackeray regarding the Eddington Memorial, 1947. Correspondence regarding R.A.S. staff, 1947. Correspondence with H. Spencer Jones regarding the exchange of astronomical publications with Germany, 1947. Programmes of meetings of the R.A.S. held on 8 November 1946 and 11 October 1946. Programme of an additional ordinary meeting of the R.A.S. to discuss the use of a large telescope in Britain, 14 June 1946. Programmes of R.A.S. meetings on 12 April 1946 and 8 March 1946. Programmes of meetings of the R.A.S. held on 9 March 1945 and 14 December 1945. Letter to H.H. Plaskett regarding 'Polar Aurora and Night Sky Light', 1938. Correspondence regarding papers published in the 'Monthly Notices', 1938. Circular giving an account of 'The Minor Planet Hermes', 1938. Correspondence with H.H. Plaskett regarding papers to be heard at the Royal Society meeting, 1938. (3) Candidate for awards. Correspondence on the presenting of Dr J.H. Oort as a candidate for the Gold Medal of the R.A.S., 1942. Correspondence on the presenting of Dr Joel Stebbims as a candidate for the Gold Medal, 1942. Correspondence with Professor S. Chapman regarding his successor as President of the Royal Astronomical Society, 1942. Memorandum regarding the award of the Gold Medal to J.H. Oort, 1942. (4) Council business. Progress report on the Port Elizabeth People's Observatory, 31 August 1948. Correspondence regarding the payment from J.C. Bentley of the Astronomical Society of South Africa in connection with work on the 8-inch telescope, 1948. Correspondence regarding the 8-inch Coleman Refractor for Port Elizabeth, 1948. Correspondence between the Royal Observatory and the Royal Society regarding the Parliamentary Grant-in-Aid of scientific publications, 1948. Letter from H. Spencer Jones to C.J.A. Trimble regarding an Eddington Gold Medal, 1948. Correspondence between H. Spencer Jones and the Chief Cashier, Bank of England, regarding 'The George Darwin Lectureship', 1948. Correspondence with Johnson, Matthey and Co. Ltd regarding gold for the Gold Medal of the Royal Astronomical Society, 1948. Report on the Executive Committee meeting of 19 July 1947. Report on the first General Assembly of the International Council of Scientific Unions, 1946. Copy of the draft agreement between the United Nations Educational, Scientific and Cultural Organisation and the International Council of Scientific Unions, 1946. Correspondence on possible cooperation between the Royal Astronomical Society and the British Astronomical Association, 1941. Correspondence between H. Spencer Jones and M. Lyot regarding the latter receiving the Gold Medal, 1939. Correspondence with Lady Lubbock, grand-daughter of William Herschel, regarding a contribution towards a memorial window to William Herschel in Upton Church, 1938. Correspondence between J.C.W. Herschel and H. Spencer Jones regarding a live broadcast talk with the B.B.C. on William Herschel, 1938. Correspondence regarding the bi-centenary of the birth of William Herschel, 1938. Correspondence with Dr Wright, Lick Observatory, regarding the award of the Gold Medal, 1938. Correspondence with Mr Ryves informing him of the award of a Jackson-Gwilt Medal and gift, 1938. Address from the R.A.S. to Charles Fabry on the occasion of the celebration of his scientific jubilee, 1938. Tribute to Fabry from the President of the R.A.S., 1938. (5) Committee business. Correspondence between H. Spencer Jones and R. Stonley regarding the Cookson Floating Telescope observations, 1937. (6) Publication of the Catalogue of Eros Secondary Reference Stars. Report for the R.A.S. on paper No. E.8865, 'Re-observation of the Magnitudes of the Southern Comparison Stars for Eros', 1937. List of corrections to the 'Catalogue of Secondary Reference Stars for Eros, 1931', 1937. Correspondence between Professor Kobold and H. Spencer Jones regarding the cost of publication of the 'Catalogue of Secondary Reference Stars for Eros', 1937. Correspondence with Mr Bhaskaran regarding the Eros observations, 1942. Lists of the 'Eros Memoir Distribution', 1942. Correspondence regarding the Eros memoir, 1941. Correspondence between Dr Eugene K. Rabe and H. Spencer Jones regarding the Eros work, 1949-1950. (7) Communications by the Astronomer Royal. Undated proposal by H. Spencer Jones that Dr J. Stebbins be awarded the Gold Medal. Correspondence between H. Spencer Jones and D.H. Sadler, 1945, regarding the Germans' destruction of the Warsaw University Observatory by fire in August 1944. Proposal that the Gold Medal be awarded to B. Edlen, 1944. Correspondence with Professor Lindblad regarding a manuscript of 'Sunspots and Magneto-hydrodynamic Waves, II', 1944. Correspondence between H. Jeffreys and H. Spencer Jones regarding lunar equation data, 1944. Correspondence between Dr E.C. Bullard and H. Spencer Jones regarding Jones' paper on 'Solar Parallax', 1942. Correspondence between A.R. Hinks and H. Spencer Jones regarding the mass of the Moon, 1941. Correspondence with Professor P. Samuels Lall regarding his paper on 'The Southern Stream and the K term', 1938. Correspondence between H. Spencer Jones and H.D. Curtis regarding the solar prominence film, 1937. (8) Communications through the Astronomer Royal. Correspondence between D.H. Sadler and H. Spencer Jones regarding 'The Application of the National Accounting Machine to the Calculation of Apparent Places of Stars', 1948. Correspondence with Nicholas Rákosi, Hungarian Astronomical Association, regarding variable stars, 1947. Correspondence between H. Spencer Jones and the Assistant Secretary of the R.A.S. regarding a paper on 'Errors of Time Determination', 1946. Correspondence with Erik Holmberg of the Lund Observatory, Sweden, 1939, regarding a paper 'On the interpretation of the Spectro-scopically Observed Rotations of Galaxies'. (9) Reports on communications. Correspondence between D.H. Sadler and H. Spencer Jones, 1946, regarding Minnaert's paper on 'The Inclination of the Axes of Sunspots'. Report on E.8729, a paper by G. Alter regarding the derivation of the distance of cluster stars, 1940. Report on a paper by Smart and Tannahill regarding the proper motions of the Cape Zone catalogue of 20,843 stars, 1940. Report on a paper by W.M. Smart and A. Ali on 'The Perseus Cluster', 1940. Report on paper No. E.8694, 'The Corona Borealis Cluster', by A. Ali, 1940. Correspondence between H. Spencer Jones and Dr R.L. Waterfield and the Revd T.E.R. Phillips regarding Jeffers's photographs of Jupiter and Mars, 1940. Report on a paper by Chapman and Miller, 1940. Statement on the work of Dr Annie Cannon, 1940. Letter from H. Spencer Jones to M. Vandekerhove, Observatoire Royal de Belgique, 1940, regarding his paper on 'Stellar Temperature Gradients'. Report on the paper E.8430, 'Objective Prism Observations of Nova Lacerta (1936)', by D.L. Edwards and D.R. Barber, 1937. (10) Miscellaneous. Memorandum on the proposed merger of 'Occasional Notes' and 'The Observatory Magazine', 1941.
1 bundle.
1937–1949
29 Correspondence on clocks. Correspondence concerning clocks, time and the 24-hour time system, including the following material:. (1) Non-Observatory clocks. Memorandum on the history of 'Joseph Knibb', 17th-century London clockmakers, 1925. Correspondence between Ethel M. Knocker, British Columbia, and Sir Frank Dyson regarding the history of Joseph Knibb, 1925. (2) Non-Observatory chronographs and transits. Correspondence between Sir Harold Spencer Jones and the Mercantile Marine Department, 1937, regarding a memorandum submitted by the Government of the U.S.A. for consideration at the International Radio Communications Conference to be held at Cairo in February 1938. Extract, in French, from the 'Propositions Pour La Conférence Internationale Des Radiocommunications Du Caire 1938', 1937. (3) Greenwich time signals. Correspondence with the Director of the B.B.C. (Time Signals) regarding the 6 pips, 1939. Correspondence between G.A. Tomlinson and H. Spencer Jones regarding the Rugby Time signal, 1937. Correspondence between H. Spencer Jones and the Hydrographer regarding work done for the General Post Office and the B.B.C., 1937. (4) Miscellaneous. Correspondence with the Hydrographer regarding German pocket sundials, with remarks by R. Atkinson on the same, 1946. Correspondence between Thomas Mercer, watchmakers, and H. Spencer Jones regarding the purchase of continental watches, 1938. Press cutting from 'The Times', 22 November 1938, regarding the 60th anniversary of the invention of standard time and the inventor, Sir Sandford Fleming, 1938. Correspondence between the Synchronome Company Ltd and H. Spencer Jones regarding the testing of 'two very fine free pendulum installations' for Russia and La Plata, 1938. Correspondence between R.C. Hayes, Dominion Observatory, and H. Spencer Jones regarding radio time signals, 1937. Reference sheet sent from the Hydrographer to Spencer Jones regarding a 'Hydrographic Report on Tristan da Cunha', with a sketch on time, 1937. (5) Adoption of 24-hour time system. Correspondence with Lord Lamington regarding support for the adoption of the 24-hour time system, 1940. Correspondence between H. Spencer Jones and the editor of the 'Sunday Times' regarding the 24-hour time system, 1940. Correspondence between Lord Lamington and H. Spencer Jones regarding twenty-four hour time, 1937. Correspondence with Colonel Gordon regarding his support for the adoption of the 24-hour time system, 1934. Memorandum on the advisability of adopting the 24-hour system, 1934. Correspondence with T.P. Godfrey regarding his disapproval of the 24-hour time system, 1934. Circular regarding the B.B.C.'s intention to introduce the 24-hour time system from 22 April 1934. Correspondence between the Administration Controller of the B.B.C. and H. Spencer Jones, 1934. Correspondence between Lord Lamington and Spencer Jones regarding 24-hour time, 1934. List of the Bills in progress in the House of Lords in February 1934. Correspondence between Lord Newton and H. Spencer Jones regarding the 24-hour time system, 1933. Correspondence with Lieutenant P.W. Woodriffe regarding the 24-hour clock, 1933. Correspondence with the editors of 'The Electrician', 'Modern Transport' and 'The Times' regarding 24-hour time, 1933. Correspondence between W. Alfred Parr, President of the British Astronomical Association, and Spencer Jones regarding support for the introduction of the 24-hour time system, 1933. Correspondence between Spencer Jones and the editor of 'The Times' regarding the introduction of the new system, 1933. Correspondence between Sir Frank Dyson and A. de V. Leigh regarding the 24-hour timetable, 1929.
1 bundle.
1925–1946
30 Papers on the 36-inch Yapp Reflector. Papers concerning the installation of the 36-inch Yapp Reflector at Greenwich, including the following material:. (1) Miscellaneous material. Undated scroll containing the proposed inscription for the new Yapp Telescope. Envelope of photographs of the 36-inch reflector at Edinburgh, showing the telescope observing carriage and grating, 1931. (2) Correspondence with Hutchinson and Cuff, solicitors, and William Johnston Yapp regarding the 36-inch reflector, 1931-1934. (3) Official correspondence with Admiralty. Correspondence with the Admiralty regarding the acceptance of W.J. Yapp's offer to present the Royal Observatory with a sum of money sufficient to purchase and install a new 36-inch reflecting telescope, 1931. Correspondence with Mr Moorby, Civil Engineer-in-Chief, regarding the estimated cost of housing the new telescope, 1931. Correspondence regarding a building for the telescope, 1931. Terms and conditions for the building of the Yapp Reflector, 1931. Progress report on the 'Greenwich 36-inch Reflector', 10 November 1931. Duplicate order form for the Yapp Reflecting Telescope and dome, sent to Sir Howard Grubb, Parsons and Co Ltd, 1931. Memorandum on electrical work required in connection with the Yapp Reflector, 1932. Memorandum regarding a slit-less spectroscope and the terms and conditions of the contract for the spectroscope, 1932. Correspondence with Sir Howard Grubb, Parsons and Co. Ltd regarding an account for £1,836 0s 0d for the second instalment of 20% of the contract for the Yapp Telescope, 1932. Accounts from Sir Howard Grubb, Parsons and Co. Ltd relating to instalment payments for the Yapp Telescope, 1933-1934. (4) Correspondence with Sir Howard Grubb, Parsons and Co. Ltd. Specification and quotation from Sir Howard Grubb, Parsons and Co. Ltd for a 36-inch Cassegrain reflecting telescope and for a dome of 30-feet outside diameter, 1931. Specification No. 1 for a reflecting telescope with a 36-inch aperture, 1931. Correspondence between Sir Frank Dyson and C. Young of Sir Howard Grubb, Parsons and Co. Ltd regarding the Yapp Reflector, 1931. Progress report by C. Young on the reflector, 10 November 1931. Correspondence between Sir Frank Dyson and C. Young regarding the Yapp Reflector, 1932. Progress report from the company, 30 April 1932. List of dome drawings from the company, 1932. Progress report by C. Davidson, 15 June 1932. . Sketch of the Yapp Reflector at Greenwich showing alternative methods of supporting the crosshead during silvering, 1933. Correspondence between Sir Frank Dyson and Sir Howard Grubb, Parsons and Co. Ltd regarding the reflector, 1933. Report by C. Davidson on the inspection of the Yapp Telescope on 8 September 1933. Correspondence between Sir Howard Grubb, Parsons and Co. Ltd. and Sir Harold Spencer Jones regarding the Yapp Telescope, 1934. Correspondence between Sir Howard Grubb, Parsons and Co. Ltd and H. Spencer Jones regarding the Yapp Telescope and the evaporation qualities of certain metals, 1936-1937. Correspondence regarding the slit spectrograph, 1936-1937. Correspondence with Sir Howard Grubb, Parsons and Co. Ltd regarding the Cassegrain mirror for the telescope, 1936-1937. Correspondence with C. Young regarding the formula for the hyperbola and its application to the Cassegrain mirror, 1936-1937. Correspondence with Sir Howard Grubb, Parsons and Co. Ltd regarding repairs to the Yapp Telescope, 1938-1939. Correspondence between Sir Howard Grubb, Parsons and Co. Ltd and R. Atkinson regarding a scheme for operating the declination slow motion, 1939. (5) Correspondence with the press. Correspondence between 'Photopress Limited' and Sir Frank Dyson regarding photographing the new Yapp Telescope, 1932. Correspondence with the Director of 'La Science and La Vie' of Paris regarding the Yapp Telescope, 1933. Correspondence with the editor of the 'Keystone Press Agency' and with the art editor of 'The Times' regarding photographing the telescope, 1933. Correspondence with the editor of 'The Sphere' regarding photographing the Yapp Reflector, 1934. Report giving details of the reflector, 1934. Correspondence with the editor of 'The Engineer' regarding the reflector, 1934. Correspondence with the news editor of 'The Evening Standard' regarding the Yapp Telescope, 1934. Telegram from the Cape Observatory, 1934, sending greetings to the Greenwich Observatory on the occasion of the official opening of the Yapp Telescope. (6) Correspondence with Sir Richard Paget and Dr W.S. Adams regarding the use of a fused quartz mirror for the 36-inch Yapp Reflector, 1931. (7) Miscellaneous correspondence regarding the Yapp Telescope. Article from 'Engineering' regarding the 40-foot revolving dome for the Stockholm Observatory, 1931. Page from a calendar showing a photograph of the 36-inch aperture reflecting telescope manufactured by Sir Howard Grubb, Parsons and Co. Ltd, 1931. Set of six photographs showing the stages in building the foundations for the dome of the Yapp Reflector, 1932. Correspondence with the Synchronome Company Limited regarding a synchronome pendulum for the controlling the clockwork of the Yapp Telescope, 1933.
1 bundle.
1931–1939
31 Official instructions for staff and buildings. Correspondence and other papers regarding instructions for staff and buildings, including the following material:. Papers regarding compensation, sick pay, etc., for employees and the repair and maintenance of buildings, and correspondence on staff matters, including appointments, resignations, retirements, deaths, transfers, loans to other departments, promotions, salary scales, conditions of employment and reorganisation, 1835-1935. Papers concerning the Astronomer Royal, Assistants, clerical staff and the 1934 staff reorganisation, 1919-1936. Papers concerning industrial staff, including mechanics, night watchmen, janitors, woodmen, labourers and cleaners, with an index giving names, dates, ranks and remarks, 1913-1937. Contents of the Astronomer Royal's Annual Reports to the Board of Visitors, 1910-1911. Correspondence on leave for civil servants in the Territorial Forces, 1907-1913. Papers on the obtaining of tickets for the Coronation procession of 22 June 1911 and the Coronation Naval Review of 24 June 1911.
1 bundle.
1835–1937
32 Papers on leaves of absence. Correspondence relating to the Astronomer Royal's leaves of absence.
1 bundle.
1919–1931
33 Correspondence on staff. Correspondence relating to appointments, transfers, retirements, loans, promotions, etc., of Assistants and other salaried staff, with an index.
1 bundle.
1915–1937
34 Correspondence on visitations. Official correspondence concerning visitations. There are four volumes of letters, covering the years 1912-1919, 1920-1925, 1926-1929 and 1930-1935 respectively, and one envelope covering 1933-1937. The correspondents include the Admiralty; members of the Board of Visitors; various societies, including the Royal Society and the Physical Society; and catering firms. The letters include arrangements for the visitations, accounts for food and drink consumed, menus, lists of property and equipment acquired since the previous visitation, and lists of members of scientific societies.
4 volumes + 1 envelope.
1912–1937
35 Visitation invitation lists. Visitation invitation lists and related correspondence.
1 bundle.
1929–1935
36 Correspondence on military service. Correspondence with or concerning staff members of the Royal Observatory on active war service, covering pay, changes of address, commissions, operations, demobilisation and re-employment. There letters are foliated in one sequence, beginning with volumes for 1914-1916 and 1916-1918, and concluding with an envelope of loose letters for 1918-1919. The volumes have been incorrectly bound as part of the series of Annual Visitation Official Correspondence (formerly A6).
2 volumes + 1 envelope.
1914–1919
37 Correspondence on the reversible transit circle. Correspondence with the Admiralty, the National Physical Laboratory and various firms, such as Troughton and Simms, regarding the reversible transit circle.
1 envelope.
1929–1939
38 Correspondence on optical instruments. Miscellaneous correspondence relating to optical instruments:. Correspondence with various engineering and optical instrument firms, 1919-1937, including estimates and accounts. There are sections on a double image star micrometer and diffraction grating for the Yapp 36-inch Refractor, 1936-1937; the grating for the 30-inch reflector, 1923-1925; and a new driving clock and various repairs to the 28-inch equatorial telescope and other instruments, 1919-1923. Miscellaneous correspondence with scientists and instrument-makers concerning instruments at the Royal Observatory, including their design and the techniques used in their manufacture, 1923-1936. Correspondence and papers, 1931-1939, regarding the purchase of a slit-less spectrograph from Adam Hilger Ltd of London for the 36-inch Yapp Telescope, including an initial specification and a specification of the spectroscope supplied to the Royal Observatory, Edinburgh; correspondence on the merits of various designs of spectrographs; and copies of accounts rendered by A. Hilger for payment.
1 bundle.
1919–1939
39 Correspondence on instruments. Miscellaneous correspondence regarding astrographical instruments, heliographs and micrometers, including the following material:. Correspondence with Sir Harold Grubb and Sons on the repair of the clock of astrographic equatorial, 1919-1920. Correspondence with Professor Turner on the supply of a réseaux, and with Cooke, Troughton and Simms on a photoheliograph, 1915-1925. Correspondence with the Mount Wilson Observatory on a spectrohelioscope, 1929-1930. Correspondence with Sir Howard Grubb and Sons on the repair of the 13-inch astrographic telescope, 1930.
1 bundle.
1915–1930
40 Correspondence on time-keepers. Correspondence relating to chronographs, clocks, time balls and time signals, including the following material:. Correspondence with E. Dent and Co. concerning a new time ball, 1914-1920. Correspondence regarding a new standard astronomical clock and Riefler clocks, 1919-1925. Correspondence regarding repairs to clocks and chronographs, 1917-1938. Correspondence concerning the sale of regulators, 1932.
1 bundle.
1914–1938
41 Correspondence on mirrors and micrometers. Correspondence relating to mirrors, micrometers and spectrophotometry, including the following material:. Correspondence with J. Cooke and Sons on a speculum mirror, 1912. Correspondence with Troughton and Simms on a Duplex micrometer, 1910-1912. Correspondence with the Cambridge Instrument Co. and the National Physical Laboratory on spectrophotometry, 1926-1930. Correspondence concerning a new measuring micrometer for the Cookson Plates and a second micrometer, 1931. Miscellaneous correspondence, 1929-1930, including letters on a prismatic astrolabe and on the sale of a transit instrument to the Helwan Observatory, Egypt.
1 bundle.
1912–1931
42 Correspondence on magnetic instruments. Miscellaneous correspondence regarding matters relating to magnetic instruments, including the following material:. Correspondence with Adam Hilger Ltd regarding a quartz-fibre vertical force magnetograph, 1920-1924. Miscellaneous correspondence relating to the repair, purchase and testing of magnetic instruments, 1923-1937, including the repair of Elliot Magnetometer No. 75 by Elliott Bros., the testing of the Shuster-Smith Magnetometer for Abinger, the return to the Royal Observatory of Magnetometer No. 161, and the ordering of a galvanometer from the Cambridge Instrument Co. Correspondence with the Cambridge Instrument Co. regarding a new magnetograph and reordering mechanism for the new Magnetic Pavilion, 1912-1916. Correspondence with the Admiralty regarding equipment for a new Magnetic House, contracts, estimates and costs, 1913-1914. Correspondence with the Cambridge Instrument Co concerning the supply of quartz-fibres for the suspension of a declination magnet, 1913. Correspondence regarding tungston-wire suspension for magnetometers, 1914. Correspondence regarding the deflection bar of a high frequency magnetometer sent for testing to the National Physical Laboratory, 1914. Correspondence on the loan of a Watson Quartz Fibre V.F. Magnetograph from Eskdalemuir and its repair at the Imperial College of Science and Technology, London, 1915-1916. Correspondence with Adam Hilger Ltd regarding a convex lens and plane quartz mirror loaned from Eskdalemuir, 1915-1916. Correspondence with John Grundy regarding a drawing of apparatus for keeping the temperature constant in the new Magnetic Pavilion, 1916.
1 bundle.
1912–1937
43 Correspondence on visitations. Correspondence relating to Visitations to the Royal Observatory, including the following material:. Correspondence with Lord Stamfordham and others regarding the Royal Visit on 23 July 1925, part of the 250th Anniversary celebrations, with sample tickets, lists of invitees and invitees' replies. Correspondence with the Foreign Office and Press regarding the visit of the King of Afghanistan on 22 March 1928. Correspondence regarding visits by Admiralty representatives, foreign officials and dignitaries, military and naval personnel, scientists, etc., 1928-1937. Correspondence regarding visits by Admiralty representatives, foreign officials and dignitaries, military and naval personnel, scientists, etc., 1936-1946, including material relating to training courses run at the Royal Observatory.
1 bundle.
1925–1946
44 Correspondence on garden parties. Correspondence relating to garden parties held at the Royal Observatory in aid of the Deptford Fund, 1929; Miller Hospital, 1936 and 1938; Deptford Babies Hospital, 1937; and the Hospital Welfare Society (Lewisham, Deptford and Greenwich Hospitals), 1939.
1 bundle.
1929–1939
45 Correspondence on the Annual Garden Party. Miscellaneous correspondence relating to the resumption of the Annual Garden Party after the move to Herstmonceux.
1 bundle.
1947
46 Correspondence on Abinger Magnetic Observatory. Correspondence on the need for the Abinger Magnetic Observatory and on the establishment of the observatory, including the following material:. Correspondence with Admiralty departments and officials, 1923-1937, including the Scientific Research Department, the Civil Engineer-in-Chief, the Hydrographic Department, the Director of Electrical Engineering, Sir Vincent Baddeley, Col. R.G. Hayes, the Director of Naval Construction and the Secretary of the Admiralty concerning the move, possible sites, instruments required, electricity and water supplies, staff requirements, rateable values of buildings, telephone facilities and installation of a wireless set. Correspondence with various firms regarding instruments required for Abinger, 1923-1925, including correspondence with Messrs E.R. Watts regarding a special theodolite; Messrs C.F. Casella and Co. Ltd regarding the Kew magnetometer; and the Cambridge Instrument Co. regarding declination North Force and vertical force variometers. Correspondence regarding magnetic disturbances at Abinger caused by electric trains, 1936. Miscellaneous material relating to electrical and magnetic disturbances and atmospheric pollution, 1900-1936, concerned mainly with the electrification of the South Eastern and Chatham Railways and alterations, extensions and new plants at the Deptford Power Station. Ordnance Survey map, 1894-1896 edition, annotated to show the new generating stations for the 1906 Electric Power Company Bill. Miscellaneous correspondence with London County Council tramways, 1915-1923, regarding magnetic disturbances and the Greenwich Power Station, including the replacement of old boilers, smoke and the new plant. Correspondence with South Eastern and Chatham Railway Company, the Admiralty, the Ministry of Transport, etc., and related papers regarding the electrification of the South Eastern and Chatham Railway and its effects on the Royal Observatory, 1913-1925. The papers include minutes and proceedings of various committees and conferences, including the Electrification of Railways Advisory Committee; a copy of a clause drafted for the protection of the Royal Observatory from the effects of electrical energy, to be included in an Act of Parliament; and discussion on possibilities and costs of moving magnetic observatories to a new site. Correspondence with Dr Chree of the Kew Observatory, 1916-1917, regarding magnetic disturbances, including a memorandum on the effect of disturbances from electrical railways on the magnetic work carried out at the Royal Observatory and a report on a comparison of magnetograph records from the Greenwich and Kew Observatories in connection with electric train disturbance. Correspondence with the Ministry of Transport, the London Electric Supply Corporation Ltd, the Admiralty and the Public Health Department, Greenwich, 1922-1936, regarding the electrification of the South Eastern and Chatham Railway and the extension of the Deptford Power Station, with a copy of the Ministry of Transport (South Eastern and Chatham) Railway Order, 1922; particulars of estimated fuel combustion of the new Deptford West Station; a report of the tribunal appointed to consider the effects of the extension; and correspondence relating to apparatus for measuring atmospheric pressure. There are also copies of relevant sections of the Electrical Power and Improvement Acts, including the London County Tramways (Electrical Power) Act, 1900; London County Council (Tramways and Improvements) Act, 1907, for the protection of Royal palaces, parks, etc.; and the London County Council (Tramways and Improvements) Act, 1910, for the protection of the Royal Observatory. Miscellaneous papers, 1912-1927, including spare copies of draft minutes, reports, etc., relating to the electrification of the South Eastern and Chatham Railway, 1921-1922, and correspondence regarding the London Electric Supply Corporation's plans to install an additional generating plant at the Deptford Station, 1912-1913. There are copies of various Railway Acts, including the Great Eastern Railway Act, 1912, ch. xxxvii; London County Council (Tramways and Improvements) Act, 1914, chs. cvi and cx/ix; and the City and South London Railway Act, 1893, ch. ccvii. There is also correspondence relating to the extension of the Deptford Generating Station, 1926, and the introduction of special clauses to the following electricity and power bills in order to protect the Royal Observatory's interests: Dorking and Leatherhead Electricity (Extension) Special Order, 1926; London and Home Counties Joint Electricity Authority Bill, 1927; London County Council General Power Bill, 1927; and the Guildford Corporation Electricity (Extension) Special Order, 1927.
1 bundle.
1893–1937
47 Correspondence on loans. Correspondence and acknowledgements relating to the loan of instruments, slides, photographs and written material to schools, colleges, universities, museums and observatories.
1 bundle.
1936–1951
48 Correspondence on orders. Correspondence relating to orders.
1 bundle.
1951
49 Correspondence on Observatory manuscripts. Correspondence concerning manuscripts at the Royal Observatory, including letters regarding the preliminary enquiries (1912) and the official visit (1913) of the Royal Commission on Public Records; a 1914 copy of 'Reprint of Schedules governing the disposal of public records relative to the Admiralty by destruction or otherwise, 1877-1913'; correspondence on G.B. Airy's alterations and reorganisations in the Record Room; and a rough list of material held in the Record Room, July 1884.
1 bundle.
1875–1914
50 Correspondence on the annual store audit. Correspondence relating to the annual audit of stores and store accounting arrangements.
1 bundle.
1948
51 Correspondence on Observatory equipment. Miscellaneous correspondence relating to Royal Observatory equipment, including the loan of a sidereal clock, a survey of scrap iron and steel and the shortage of typewriters.
1 bundle.
1946–1951
52 Correspondence with tradesmen. Correspondence, estimates and tenders relating to tradesmen, including ironmonger, builders, booksellers, publishers, wine merchants, window cleaners and coal merchants.
1 bundle.
1914–1935
53 Correspondence with instrument firms. Correspondence, estimates and orders relating to scientific instrument firms, including Negretti and Zambra; Troughton and Simms; Siemens Bros. and Co. Ltd; Adam Hilger Ltd; Phillips; the Cambridge Instrument Co.; C.F. Casella and Co. Ltd; Sir Howard Grubb, Parsons and Co. Ltd; and Vickers.
1 bundle.
1918–1936
54 Tables of time signal errors. Tables of errors for the 10- and 13-hour signals, 1 January - 27 October 1895. There is also a letter from the Sociedade Optica-Téchica Optec, Lda, 16 November 1936, requesting information regarding a chronograph supplied to the Royal Observatory by the German firm Wetzer of Pfronten, with a copy of the Astronomer Royal's reply of 21 November.
1 bundle.
1895–1936
55 Correspondence on mathematical calculations. Correspondence relating to mathematical calculations, including a formula for computing the correction for altitude at sunrise. There are also copies of F.C. Blyth's 'Notes on Gravitation, the Sun's Movement in Space' and 'The Movement of the Sun. Newton's Proof of the Precession of the Equinoxes'.
1 bundle.
1922–1927
56 Correspondence on Observatory publications. Correspondence with the Admiralty and His Majesty's Stationary Office regarding the printing of the Royal Observatory's publications; the supply of stationary, adding machines, etc., to the Observatory; waste paper; receipts; and particulars of the contract entered into by H.M. Stationary Office for printing, 1930 and 1937.
1 bundle.
1922–1937
57 Correspondence on Observatory publications. Correspondence relating to the storage of Royal Observatory publications, including correspondence with His Majesty's Stationary Office regarding the storage and disposal of surplus stocks of Observatory publications, 1929-1937, and correspondence with Yale University, 1919-1936, regarding the Observatory storing 200 copies of E.W. Brown's 'Tables of the Motion of the Moon' for Yale and concerning insurance for these copies.
1 bundle.
1919–1937
58 Correspondence on Observatory publications. Correspondence relating to the distribution of Royal Observatory publications to universities, colleges, libraries, schools, observatories, etc., 1910-1914, 1919-1927 and 1933-1938.
1 bundle + 1 volume.
1910–1938
59 Correspondence on chronometers. Correspondence concerning chronometers, including a ledger titled 'Instructions and precedents relating to the Time and Chronometer Branch', containing letters and instructions regarding chronometers; correspondence relating to a water clock, with a map of the water supply to the clock; and correspondence with Lieutenant-Commander R.T. Gould on the repair, cleaning, insurance, exhibition and storage of the John Harrison chronometers, Nos 1, 2, 3 and 4, with a reprint of an article by Gould from the 'Monthly Notice of the Royal Astronomical Society', Vol. 89, No. 4 (February 1929), concerning 'The Society's Harrison Clock'.
1 bundle.
1883–1948
60 Correspondence on magnetism. Official correspondence with the Admiralty regarding magnetic instruments, surveys, disturbances and results of observations.
1 bundle.
1932–1934
61 Correspondence with magnetic observatories. Correspondence with magnetic observatories, including Eskdalemuir and Kew, regarding staff and other subjects, and with the National Physical Laboratory, regarding instruments.
1 bundle.
1911–1932
62 Correspondence on magnetic investigations. Correspondence concerning magnetic investigations, including correspondence with the Admiralty regarding suitable observation stations, and with the National Physical Laboratory regarding the propagation of radio waves.
1 bundle.
1930–1936
63 Correspondence on magnetic instruments. Correspondence with several observatories, the Admiralty and the Physical Department regarding the repair, testing and standardisation of magnetic instruments and the issuing of certificates, 1935-1936; correspondence with the High Commission for India, 1934-1936, regarding the standardisation of magnets for the Colaba Observatory, India, and magnetic instruments for other Indian observatories, such as Alibag; and correspondence and reports relating to the comparison of Eskdalemuir and Abinger magnetometers, 1932-1935.
1 bundle.
1932–1936
64 Correspondence on magnetic observations. Correspondence regarding magnetic observations received by the Royal Observatory from other observatories.
1 bundle.
1924–1936
65 Correspondence on magnetic observations. Correspondence relating to magnetic observations given by the Royal Observatory to universities, colleges, collieries and petroleum companies, 1927-1928 and 1935-1938.
1 bundle.
1927–1938
66 Papers on magnetic surveys. Correspondence, reports and results relating to magnetic surveys, comparisons of instruments, etc., with copies of G.B. Airy's 'Correction of the Compass in iron ships without the use of a fixed mark', 1878, and G.W. Walker's 'Magnetic Declination in Great Britain and Ireland', 1915.
1 bundle.
1878–1936
67 Correspondence on magnetic experiments. Correspondence relating to magnetic experiments.
1 bundle.
1895–1924
68 Correspondence on the Comité International Météorologique. Correspondence concerning the 'Comité International Météorologique et Commission Internationale de Magnetisme Semestre', with copies of quarterly summaries of days classified according to magnetic disturbance, sent to the Director of the Royal Meteorological Institute, Netherlands; a report on magnetic work undertaken, sent to the Cassiot Committee, 1924; and a list of the magnetic work undertaken at the Kew Observatory.
1 bundle.
1913–1927
69 Correspondence on Earth currents. Correspondence concerning reports, drawings, photographs, etc., of Earth currents.
1 bundle.
1906–1928
70 Correspondence on magnetism. Miscellaneous correspondence concerning magnetism, including scientific discoveries; electric fields; new types of magnet; sunspots and magnetic storms; starting a new magnetic observatory in Siam (Thailand); and special work done on terrestrial magnetism at Abinger for the second International Polar Year 1932-1933.
1 bundle.
1920–1936
71 Correspondence with the Admiralty. Official correspondence with the Admiralty regarding the appointments, loans, salaries, examinations, accidents, leave and military service of computers, 1916-1936; correspondence with regimental paymasters regarding war separation allowances to dependents, 1917-1919; and correspondence with officers in charge of records, regarding the notification of war casualties, 1917.
1 bundle.
1916–1936
72 Correspondence on computers. Correspondence regarding the engagement of computers, including applications; copies of examination regulations and subjects; and the candidates' examination papers of January 1924, 1906-1908, 1913-1924 and 1928-1935.
1 bundle.
1906–1935
73 Papers on computers' salaries. Correspondence, lists and tables concerning computers' salaries, including increases in salary, 1918-1936; monthly pay lists/summaries and rates of pay, 1916-1936; regulations affecting night-observing and the duties of temporary computers; correspondence relating to separation allowances to dependants, 1917-1918; correspondence concerning the salaries paid for special magnetic declination work, 1920-1922; and correspondence on the reassessment of [Balance] of Civil Pay 1925-1927 (the war bonus due to civil servants who served in His Majesty's Forces during the First World War), with a copy of the claim form.
1 bundle.
1916–1936
74 Correspondence on computers' resignations. Correspondence regarding the resignations of computers and their testimonials.
1 bundle.
1912–1928
75 Correspondence on loaning a computer. Correspondence relating to the loan of a computer to the Ordnance Committee.
1 bundle.
1915–1917
76 Correspondence on the Cape Observatory. Correspondence with the Admiralty regarding the Royal Observatory, Cape of Good Hope, including staff conditions, leave, retirement and injury; publications; equipment, including the new calculating machines and transit circle; and finance.
1 bundle.
1928–1936
77 Correspondence on staff for the Cape. Correspondence regarding the appointment of temporary computers and junior assistants for the Cape Observatory and their examinations, salaries and references.
1 bundle.
1913–1935
78 Correspondence on a coordinate measuring machine. Correspondence with Messrs Hilger and the Admiralty regarding a coordinate measuring machine L43 for photographic [star] plates and a microscope.
1 bundle.
1928–1929
79 Correspondence on the Cape Observatory. Miscellaneous correspondence regarding the Royal Observatory, Cape of Good Hope, including general correspondence with the Astronomer Royal, 1912-1915, regarding work at the Cape, staff matters, new appointments, instruments and publications; correspondence relating to Admiralty proposals to hand over the administration of the Cape Observatory to the South African Government and Admiralty complaints about the Cape Observatory, its staff and its instrument requirements, 1919-1930, with a copy of the report of H.M. Astronomer at the Cape to the Secretary of the Admiralty, 1919; correspondence on the distribution of Cape publications, 1913-1914; and general correspondence between H.M. Astronomer at the Cape and the Astronomer Royal, 1914-1936, regarding the distribution of Cape publications, the Cape Observatory Library, adding machines, the transport of chronometers, pensions and lantern slides for the photoheliograph. There is also a copy of the report from H.M. Astronomer of the Cape to the Secretary of the Admiralty, 1919; a copy of a paper on the 'Determination of the Constant of Aberration' of certain circumpolar stars; and an extract from G. Forbes' journal on the Transit of Venus Expedition of 1874.
1 bundle.
1912–1936
80 Correspondence on the Ordnance Survey. Correspondence regarding various aspects of the Ordnance Survey, including the benchmark at the Royal Observatory used by the Ordnance Survey surveyors; a new triangulation of Great Britain based on the position of a new transit instrument at the Royal Observatory; a copy of the agenda for the International Geodetic and Geophysical Union meeting at Madrid, 1924; three copies of a leaflet on Ordnance Survey maps; information on the publication of the 'Empire Survey Review 1931'; and correspondence relating to the levelling stations/tide gauges in Ireland, 1936-1937.
1 bundle.
1904–1938
81 Papers on geodesy and geophysics. Miscellaneous material relating to geodesy and geodynamics, including a report on terrestrial magnetism and atmospheric electricity work at Greenwich and Abinger, 1927-1929; reports and notes to members of the Committee for Geodesy and Geodynamics, 1928 and 1930; correspondence regarding the possibility of establishing a permanent Department of Geodesy and Geophysics at Cambridge University; and a copy of the International Association of Geodesy 'Rapport du Secrétaire Perpétuel', 1909.
1 bundle.
1897–1931
82 Correspondence on the Indian Survey. Correspondence regarding the Indian Survey, including triangulation stations and instruments, with a chart showing the connection between the triangulations of India and Russia, 1914.
1 bundle.
1893–1932
83 Correspondence on gravity surveys. Correspondence regarding various gravity surveys, including the Miller (Ottawa Observatory) Survey of gravity measurements at different national observatories, with the results, 1928-1929; the magnetic and gravity survey cruise off the Western Isles of Scotland, 1931; the United States Gravity Survey of the Bahamas, 1931; a report of the Committee for Geodesy and Geodynamics, 1930, concerning pendulum observations at various gravity stations in England; and a copy of a plan of the position of the National Gravity Station for Great Britain (at the Royal Observatory), scale 1:2500, 1929.
1 bundle.
1928–1933
84 Papers on Standard Time. Miscellaneous correspondence, official notices, tables and articles relating to Standard Time, including the following material:. Proceedings of the Conference Internationale de l'Heure, 1913. Colonial Office notifications to the Royal Observatory of changes in Standard Time adopted in the colonies and protectorates, with copies of various acts and ordinances amending the law in respect of time at home and in the colonies, including the Act of 1880 and the British Summer Time Act of 1916. . Report of the Summer Time Committee, 1917. Tables by J. Milne titled 'Civil Time' showing the difference in time between Greenwich Mean Time and Civil Time in various parts of the world, taken from the 'Geophysical Journal', 1899. Copy of the 'Distribution of gravity over the Nippin Trench and related areas' by M. Matuyama, 1936. Copy of 'The Actual State of the Standard Time Question' by Dr R. Schram, taken from 'The Observatory', No. 161, April 1890. Copy of the Proceedings of the Commission Internationale de l'Heure, October 1919. . Copy of a lecture given by W.H.M. Christie at the weekly meeting of the Royal Institution, March 1886, concerning 'Universal Time'.
1 bundle.
1880–1940
85 Instructions on standards. Official instructions and related papers concerning standards, including the proceedings of a conference held at the Board of Trade, 1921, regarding proposals for the amendment of the International Metric Convention, and a table comparing imperial with metric measurements.
1 bundle.
1921
86 Correspondence on the Standard Yard. Correspondence regarding the Standard Yard.
1 bundle.
1932
87 Papers on planetary, lunar and radio astronomy. Papers regarding planetary, lunar and radio astronomy, including the following material:. Planetary and lunar tables, errors in the tables and papers on Drayton's theory of the Earth's processional rotation, 1893-1894. Lunar tables and errors in them and material on lunar tides and motions of the moon, 1924-1925, with correspondence with F.R. Field and proofs and newscuttings of his articles on the history of the Earth, earthquakes, the effects of the Sun and the planets on the earth, sunspots and glaciation. Papers on eclipses, new planets, lunar altitudes, measurements, etc., 1927-1936. Correspondence with the International Scientific Radio Union, the B.B.C., the Radio Society of Great Britain and the Comité Francais de Radiotélégraphie Scientifique, 1935-1940, regarding the association between the fading of short radio waves, bright star eruptions and ionospheric disturbances. Correspondence concerning coronas, sunspots and weather and radio conditions, 1923-1938.
1 bundle.
1893–1940
88 Correspondence on moons and satellites. General correspondence regarding the moons of Jupiter and Saturn and the ephemeris of the 8th satellite of Jupiter, 1922-1936. There are also papers from 1916-1923, comprising photographic observations of Jupiter's satellites by the Royal Observatory, correspondence with Dr de Sitter of Leiden, and lists of photographic plates.
1 bundle.
1916–1936
89 Correspondence on solar photography. Correspondence concerning solar photography, including letters regarding plates taken at the Cape and Kodaikanal Observatories and their shipment to England; requests for copies of the Royal Observatory reports on photographic results and copies of specific plates; sunspots and radio reception conditions; the storage of solar negatives and prints at the Science Museum; and records of all the Science Museum's early plates and a list of those for retention, 1936.
1 bundle.
1932–1936
90 Correspondence on eclipses and occultations. Miscellaneous correspondence regarding eclipses and transit occultations.
1 bundle.
1927–1936
91 Correspondence on eclipses. Correspondence regarding eclipses, including letters concerning the eclipses of 28 April 1911, 24 August 1914, 21 September 1922, 14 January 1926, 29 June 1927, 9 May 1929, 21-22 October 1930, 31 August 1932, 19 June 1936 and 29 May 1938. The correspondence is concerned principally with the choosing of sites, the shipping of equipment, insurance, payment for observers and results. There is correspondence on the instruments left in Russia at the beginning of the First World War and letters regarding the attempt to verify Einstein's displacement theory. Other items include a copy of the 'Nautical Almanac Circular', No. 20: 'Local Particulars of the Total Eclipse of the Sun, 1914 August 20th-21st'; an Ordnance Survey eclipse map for the 29 June 1927 eclipse; and a pamphlet for the Royal Astronomical Society's eclipse tours to Canada, 1932.
3 bundles.
1910–1940
92 Correspondence on stellar parallax. Miscellaneous correspondence with American observatories and the Stellar Parallax Committee concerning annual reports and other matters relating to stellar parallax. The papers include a copy of 'The Distances, Absolute Magnitudes and Spectra of about 700 stars in 80 equal portions of space for use with ordinary star maps and summary star list and map' by T.E. Heath, 1917.
1 bundle.
1915–1938
93 Correspondence on observatories. (1) Correspondence regarding Commonwealth and colonial observatories, 1911-1935, including the following material:. Correspondence regarding equipment for the Mount Faber Observatory, Singapore, 1928-1930, including a transit instrument and micrometer. Correspondence concerning the closure of the Apia Observatory, Samoa, by the New Zealand Government, 1919-1935. Correspondence on the supply and testing of a 4-inch transit instrument and clock for the Colombo Observatory, Ceylon, 1919-1923. Correspondence with the Colonial Office regarding the proposed establishment of an astronomical observatory in Kenya, 1929-1930. Correspondence concerning the Hector Observatory, New Zealand, 1911-1933, including the introduction of a time signal service; instruments bought by or loaned to the observatory; Royal Observatory publications; meridian observations; and a list of members of the New Zealand Astronomical Society, 1925. Correspondence with the Melbourne Observatory, 1915-1921, including plans of the new Magnetic House sent by the Royal Observatory and letters concerning the ordering of a travelling wire micrometer. Correspondence with the Sydney Observatory, 1923-1931, regarding the Royal Observatory's help in obtaining a silvered glass réseau, the closure of the observatory and its progress with work for the Astrographic Catalogue. Correspondence with the Adelaide Observatory, 1919-1920, regarding a portable transit for the observatory. Correspondence with the Perth Observatory, 1917-1918, regarding a clock for wireless time signals, proposed changes in the control of the observatory and its closure. (2) Correspondence with European observatories, 1896-1927, including the following material:. Correspondence with the Armagh Observatory regarding its double star work and instruments, 1924-1927. Correspondence with the Oxford Observatory, 1915-1923, including miscellaneous correspondence with Professor Turner relating to plates, barometer records, meetings, staff salaries, etc. Correspondence with the Bureau des Longitudes concerning a conference on fundamental stars, 1896. Correspondence with the Tapada Observatory, Lisbon, regarding its work, 1900. Correspondence with the Uccle Observatory, Belgium, 1906-1908, relating to lists of observatories. Correspondence with the Milan Observatory, which sought information on observatories in the United Kingdom, 1906. Correspondence with the Turin Observatory regarding its publication 'L'annuario astronomico', 1908. (3) Correspondence with non-European observatories, 1894-1935, including the following material:. Correspondence with the Nizamiah Observatory, Hyderabad, India, regarding the printing of its Astrographic Catalogue, 1933. Correspondence with the Iraqi Government concerning the proposed construction of an astronomical observatory, 1931. Correspondence with the Observatorio Astronomico Nacional of Argentina at Cordoba, 1932-1935, regarding the printing of D.M. maps, the purchase of a Shortt clock and attacks on the director. Correspondence with the Royal Alfred Observatory, Mauritius, 1920-1924, regarding the weather time service, new instruments and its annual reports. Correspondence with the Turkish Embassy, London, relating to an assistant for the Constantinople Observatory, 1894. (4) General correspondence with various observatories at home and abroad, 1928-1937, regarding meetings, conferences, new observatories, appointments, reports, expeditions and instruments.
1 bundle.
1894–1937
94 Papers on astronomers' deaths. Obituary notices, cards, newscuttings and correspondence regarding the deaths of British and foreign astronomers, including material relating to Sir W.H.M. Christie, J.N. Lockyer and S.S. Hough.
1 bundle.
1919–1925
95 Correspondence on instruments. Correspondence with instrument manufacturers, other observatories, astronomers, inventors, etc., regarding instruments not held at the Royal Observatory, including letters asking for advice and requests to borrow or buy equipment. The papers include the following material:. Miscellaneous correspondence, 1905-1937, including letters regarding plates needed for the trigonometrical surveys of India, 1909-1910; a new Evershed solar spectroscope, 1905-1906; and the renewal of an observatory dome in the Aldershot Command, 1937. Miscellaneous correspondence, photographs, blueprints, etc., 1908-1918, including material relating to a Duplex astrographic micrometer for the Cordoba Observatory; a blueprint of Troughton's first zenith telescope; an astrographic micrometer for the Sydney Observatory; and astronomical models by William Wilson for colleges and schools. Miscellaneous correspondence, 1918-1920, including papers regarding an equatorial telescope by Negretti and Zambra; a printing chronograph for South Australia; the Baker Sextant No. 12; a new microscope for the astrograph at Sydney; and transit instruments A62 and A64, returned from Malta. Miscellaneous correspondence, 1921-1928, including letters concerning the purchase of a Zeiss planetarium by London County Council. Miscellaneous correspondence, 1929-1934, including letters regarding the 4-inch transit for the Mount Faber Observatory, Singapore, and the Osborne Telescope.
1 bundle.
1905–1937
96 Correspondence on astronomical methods. Correspondence and discussion of astronomical methods with other observatories, 1892-1917, including material relating to lunar distances; the 5-figure logbook used at the Royal Observatory; the stereoscopic method of determining stars; copies of 'Parallax Determination by Photography', 1903, and 'The Value of Solar Eclipses for Geodetic Measurements', 1905, by C.E. Stromeyer; and R-D discordance. Correspondence and discussion of astronomical methods, 1917-1936, including material relating to observations of stars at elongation to obtain fundamental declinations; the Principle of Minimum N.P.D.; the mean place of Polaris; and pendulum shutter apparatus.
1 bundle.
1892–1936
97 Correspondence on variable stars and novae. Correspondence regarding variable stars and novae, including letters and telegrams to the Royal Observatory announcing the sighting of novae and other correspondence asking for further details, plates of, and information on, the magnitude, ascension, declination and colour of novae:. Miscellaneous correspondence, 1893-1918, including the discoveries of Nova Aurigae, 1893; Nova Persei, 1901; Nova Lacertae, 1910; Nova Geminorum, 1912; and Nova Aquilae, 1918. There are also newspaper cuttings; a copy of the 'Edinburgh Circular', No. 54, concerning Nova Aurigae; two copies of the Georgetown College Observatory's first chart and catalogue for observing Nova Persei, 1903; and Captain Piper's observation of Nova Aquilae. Miscellaneous correspondence, 1921-1937, including a circular from the Lowell Observatory on 'The Discovery of a Faint Nebular Structure around R Aquarii', December 1921. There are also letters regarding obtaining plates of Nova Pictoris, the eclipse Zeta Aurigae, the position of Nova Cephei, and a numerical analysis of variable stars.
1 bundle.
1893–1937
98 Correspondence on star catalogues. Correspondence regarding star catalogues, including requests for copies of catalogues and of information from them, and correspondence with other observatory astronomers drawing attention to errors:. Miscellaneous correspondence, 1917-1926, including correspondence with the Harvard College Observatory regarding Pickering's catalogue, the preparation of the Royal Observatory's 1910 catalogue and the reduction of the Paramatta catalogue. There is also a copy of Dyson's 'Analysis of the Proper Motions of the Reference Stars in the Greenwich Astrographic Catalogue', 1920; a list of selected area standards for meridian observatories, 1922; a list of abbreviations for the names of constellations; correspondence relating to Eros comparison stars; and the rough draft and parts of the final typed copy of a biography of Sir W.H.M. Christie. Miscellaneous correspondence, 1927-1934, including letters regarding the preparation of a new working catalogue for the transit circle; general enquiries, such as a request for a copy of the latest star catalogues; and a copy of the draft for the 'Catalogue of Fundamental Declinations of 1631 stars for 1915.0' by N. Dneprovsky of the Pulkovo Observatory.
1 bundle.
1917–1934
99 Correspondence on double stars and nebulae. Miscellaneous correspondence with other observatories and astronomers who had requested plates and information on various double stars and nebulae. There is also a copy of 'The greatest star catalogue', a Science Service radio talk for C.B.S. delivered by S.G. Barton, taken from 'Scientific Monthly', Vol. 39 (October 1934).
1 bundle.
1929–1938
100 Correspondence on stars and nebulae. Miscellaneous correspondence regarding stars and nebulae, including a report on photographs taken of zone +25°/-25° to +31°/-31°; a comparison of a number of stars shown on Wellington and Monarch plates; a measurement of the heat emitted by stars; slides of nebulae Messier 51, 94, 99 and NGC 3242, the Andromeda Nebulae and Alpha Ceti; and a report on the progress in the photometry of the stars in Kapteyn's selected areas, 1923.
1 bundle.
1914–1938
101 Correspondence on the Nautical Almanac Office. Correspondence with the Admiralty and the Treasury regarding the Nautical Almanac Office and its reorganisation, staffing, structure, pay, sales, prices and changes in the layout of its publications:. Correspondence relating to proposed changes in the structure and layout of the 'Nautical Almanac', 1903-1904, including notes on the differences between the 'Nautical Almanac', 'Connaissance de Temps' and 'Berliner Jahrbuch' and proposals that lunar distances be omitted from the 'Nautical Almanac' in the future and alternative astronomical data on ephemeris, parallaxes, and occultations be included. Correspondence, 1911-1926, regarding proposed changes to the 'Nautical Almanac' resulting from discussions at the Paris Conference, October 1911, and general enquiries. The changes relate to staffing, work done and publications, including suggestions that the day begin at 00.00 midnight and that the N.A.O. be amalgamated with the Royal Observatory. The enquiries include where the 'Nautical Almanac' can be purchased and how much it costs. General correspondence concerning the reorganisation and changes at the N.A.O., 1923-1936, including copies of committee and conference minutes regarding the N.A.O. and correspondence relating to the construction of an occultation machine by the Royal Observatory for the N.A.O.
1 bundle.
1903–1936
102 Correspondence on comets and meteors. Correspondence regarding comets, fireballs and meteors, including letters concerning the ephemeris of Paris-Winnecke's Comet and copies of a circular that was sent out, 1921; general correspondence relating to Paris-Winnecke's Comet, 1921-1922, comprised of requests for information about it; and general correspondence on comets, meteors and fireballs, including those of Metcalfe, Devicos, Neujmin, Wolfe, Encke, Meuishe, Halley and Schaumasse, 1916-1919, and of Metcalfe, Skjellerup, Perrine, Baade, Reid 1924a, Gallobini-Zinner 1847v, Comet 1910a, Donati, Cheseaux and Wilk, 1919-1926.
1 bundle.
1916–1926
103 Correspondence on comets and meteors. General correspondence on comets and meteors, including an ephemeris of Paris-Winnecke and notes on Dr Weir's manuscripts by Dr Cammelin, with Weir's reply. There are also British Astronomical Association circulars, Nos 50-54, 1927, concerning the daylight meteor.
1 bundle.
1921–1933
104 Astronomical telegrams. Astronomical telegrams and letters relating to them, including correspondence with other observatories, General Post Office, Bureau des Longitudes, Professor Strömgren and the military authorities regarding proposed changes in discriminating astronomical information as a result of the First World War, and telegrams and letters relating to the sighting of comets, including Metcalfe's, February 1915 (which was eventually deemed to be an asteroid), Mellishe's, February 1915, Taylor's, December 1915, and Neujmin's, February 1916.
1 bundle.
1914–1918
105 Correspondence regarding enquiries. Correspondence regarding observations and calculations provided by the Royal Observatory, comprised of enquiries from other observatories, astronomers, the Admiralty and the general public and the Observatory's replies:. Observations and calculations, 1915-1916, concerning the position of Polaris, Greenwich parallaxes, the position of the Moon, flexure determinations, times of sunset and errors of the Moon. Observations and calculations, 1917-1925, concerning the position of Polaris; the declination, position, bearing, azimuth, mean error of longitude, passage, elevation and ascension of the Moon; the position, areas of sunspots, equinoxes and lighting-up times of the Sun; inter-stellar distances, declination, etc., of stars; and the position, declination and ascension of planets.
1 bundle.
1915–1925
106 Correspondence regarding requests. Correspondence regarding observations, calculations and gifts provided by the Royal Observatory. Most of the papers consist of requests for copies and loans of Observatory slides, plates and photographs relating to the movement of the Earth's Pole, the star field of Orion, the Milky Way, sunspots, transit instruments, nebulae, comets and eclipses.
1 bundle.
1916–1937
107 Astronomical enquiries. Miscellaneous astronomical enquiries to the Royal Observatory from members of the general public, firms, forces, ministries, councils, universities, societies, institutes, companies, etc., relating to the Moon, including its centre of gravity, phases, the 'Man in the Moon', times of the full Moon, new and harvest moons, longitude, lunar tables, tides and transits; the Sun, including sunspots, the solstice, the equinox, solar eclipses, times of sunrise and sunset, the seasons, the length of the solar year, the angle of the Sun's rays and sundials; stars, including parallaxes, clusters, constellations, the star of Bethlehem, new stars, the Pole Star, declinations and names; planets, including transits, satellites, ascension, declination, longitude and temperature; comets and meteors; the inclination of the Earth's axis; astronomical instruments; astronomical books and other publications, including those of the Royal Observatory; photographs and plates; the Zodiac and astrology; astronomy and biblical and historical events; the work and history of the Royal Observatory; advice to would-be astronomers; and time, including time-balls, clocks and British Summer Time.
3 bundles.
1916–1936
108 Correspondence on lunar physics. Correspondence with astronomers and others regarding lunar physics, including the lunar crater Taquet, the lunar cycle and tides, the Moon's orbit, declination, occultation and perigee, the synodic month and secular acceleration.
1 bundle.
1913–1931
109 Correspondence on planets. Miscellaneous correspondence regarding planets, including the heat and brightness of Mercury, calculations to determine the heliocentric longitudes and ephemeris of planets, and transits of Venus.
1 bundle.
1928–1937
110 Correspondence on astrographic charts. Correspondence with the Cordoba, Melbourne and Oxford observatories concerning astrographic charts, including the collection of information for the charts; adjustments to the photographical equatorial telescope; and financial, printing and staffing problems at the Oxford Observatory.
1 bundle.
1908–1932
111 Correspondence on stellar magnitudes. Correspondence regarding photographic work done by different observatories and the determination of star magnitudes for the Astrographic Catalogue.
1 bundle.
1893–1938
112 Correspondence on the British Association. Correspondence regarding the British Association for the Advancement of Science, including several circulars from the Association.
1 bundle.
1874–1921
113 Correspondence with the Physical Society of London. Correspondence with the Physical Society of London regarding its publications and information supplied for them by the Royal Observatory. There are also copies of the Society's Memoranda of Association and Special Notices.
1 bundle.
1916–1936
114 Correspondence with photographic societies. Correspondence with photographic societies regarding the international Congress of Photography in London, 1914, and a list of photographs of the total eclipse of the Sun taken at Sobral, Brazil, in 1919.
1 bundle.
1914–1919
115 Correspondence with the Royal Institution of London. Correspondence with the Royal Institution of London regarding lectures, the loan of photographs and drawings of eclipses, Halley's Comet, the Milky Way and Jovian model, and three lectures to be given by the Astronomer Royal.
1 bundle.
1928–1932
116 Correspondence with societies. (1) Correspondence with miscellaneous societies, 1900-1923, including the British Astronomical Association, regarding lectures for 1917; Royal Geographical Society, regarding a geodetic survey, 1923; Optical Convention, regarding a visit to the Royal Observatory, schedules, agenda, etc., 1912; and the Optical Society, regarding the Optical Standards Committee and the Optical Convention, 1900-1904. (2) Correspondence with miscellaneous societies, 1913-1916, including the Mexican Astronomical Society; Edinburgh Royal Mathematical Association; Mathematical Association, London Branch; British Science Guild; Royal Society of Edinburgh; Russian Astronomical Society; and Royal Astronomical Society of Canada. (3) Correspondence with miscellaneous societies, 1914-1925, including the Technical Committee of the Optical Convention; Astronomical and Astrophysical Society of America; Mathematical Association, London Branch; American Astronomical Society; Belgian Astronomical Society; Royal Society of Edinburgh; Royal Geographical Society; National Committee for Geodesy and Geophysics; British Astronomical Association; and Astronomical Society of the Pacific. (4) Correspondence with miscellaneous societies, 1924-1929, including the Royal Geographical Society; Optical Society; and British Horological Institute. (5) Miscellaneous correspondence with the British Astronomical Association, 1930-1937, regarding the design of the Walter Goodacre Medal, disputes, the annual dinner, comments on papers submitted, membership applications, the printing of the Journal and the stock of publications.
1 bundle.
1900–1937
117 Correspondence with institutions. Correspondence with the National Physical Laboratory, 1935-1936, regarding the international testing and comparison of calibrated platinum step reducers used in astronomical spectrophotometry, and correspondence with other institutions, 1930-1938, including the Institute of Physics, H.M. Office of Works and the Franklin Institute, Pennsylvania.
1 bundle.
1930–1938
118 Verification of the Theory of Relativity. 'Verification of the Theory of Relativity', an undated five-page typescript. A covering sheet has the title 'The British Empire Exhibition 1924'.
1 bundle.
circa 1924
119 Correspondence on horology. Correspondence with the Worshipful Company of Clockmakers and the British Horological Institute regarding the Worshipful Company of Clockmakers annual prizes, the encouragement of horological inventions, and financial contributions to the inmates of Company House at the Clock and Watchmakers' Asylum and the Widows' House. There is also correspondence with R.T. Gould relating to his book on chronometers and the purchase of the original Blue Chronometer of Thomas Mudge (1777) for the Company Museum.
1 bundle.
1911–1921
120 Correspondence on Bruce Medal nominations. Correspondence between the Astronomer Royal and the Astronomical Society of the Pacific regarding the nomination of astronomers for the Bruce Medal.
1 bundle.
1934–1936
121 Correspondence with the press. Correspondence with journalists, photographers and the companies they represent regarding interviews, articles, etc., with newscuttings on the Royal Observatory and its work and on the Astronomer Royal. The subjects covered include the 1900 Eclipse Expedition, Greenwich Time, the re-determination of the Greenwich-Paris longitude, the method of photographing stars and the testing of chronometers.
1 bundle.
1900–1924
122 Correspondence with institutions. Miscellaneous correspondence with societies, universities, etc., regarding the Astronomer Royal's election as an honorary member of the Yale Astronomical Society, American Astronomical Society and University of London. There are also papers of the University of London, including a draft report of the Board of Studies in Mathematics, draft regulations for a revised syllabus in mathematics, and a report on the mathematical syllabus for the Matriculation Examination.
1 bundle.
1899–1921
123 Papers on physics. Miscellaneous correspondence and related papers regarding physics, including the following material:. Correspondence with the Royal Aircraft Factory, South Farnborough, regarding testing the action of sunlight on linen fabric, 1918. Correspondence concerning general physics, 1916-1923, relating mainly to Einstein's theories; requests for information on the 1919 Eclipse observations at Sobral, Brazil; and a report on photographs. There is also a report of the Committee of the Board of Mathematical Studies, University of London, regarding the mathematical syllabus. Correspondence relating to the Carnegie Institution observations in connection with the Einstein Theory, 1920-1938. The correspondence is mainly with Dr Louis A. Bauer, regarding his interpretation of the results of Dr Crommelin's observations at Sobral of the solar eclipse of 29 May 1919, with a graph of the results, plates showing the non-radial effects of the light deflections and various tables.
1 bundle.
1916–1938
124 Correspondence on the Optical Convention. Correspondence regarding the Optical Convention of 12-17 April 1926 held at Imperial College. The papers cover the Astronomer Royal's election as President of the Convention, committee meetings, rules, the presidential address and broadcast, exhibits, lists of members and officers of the Convention, a circular on the convention's activities and minutes of meetings.
1 bundle.
1925–1927
125 Correspondence on pure mathematics. Correspondence regarding new theories and calculations relating to pure mathematics, including gravity and gravitation, verification of the Theory of Relativity, arithmetic tables and logarithms and anti-logarithms.
1 bundle.
1927–1928
126 Correspondence on geography and hydrography. Correspondence regarding geography and hydrography, relating to the review of the International Hydrographic Bureau (Monaco), Royal Observatory reports, chronometer stock and distances. The papers include correspondence with the Newfoundland High Commissioner's Office and a copy of pages 11-18 of 'The Prime Meridian' by W.G. Perrin.
1 bundle.
1923–1927
127 Papers on the Royal Society. Correspondence, official circulars and other papers regarding Royal Society council business:. (1) Papers on council business, 1907-1935, including the Copley and Royal Medals, the Mackinnon Studentship, an astrographic chart, the need to establish a station for solar photography at an Australian observatory, the Royal Society receiving the Greenwich Time Signal, the new International Geodetic Association, the Bureau des Longitudes and the powers of Royal Society's national committees. (2) Papers on council business, 1879-1901, comprised mainly of circulars, including the Royal Society Report of the British Academy Committee, 1900; a letter granting Bushley House and its grounds for the use of the National Physical Laboratory and conditions to be observed, 1900; Royal Society procedure for the nomination of foreign members, 1879; and Royal Society instructions for government grant boards. (3) Papers on council business relating mainly to the Inter-Allied Conference on International Scientific Organizations, Paris, November 1918, including lists of delegates; the agenda; Royal Society resolutions to be submitted to the conference, with a statement; a draft proposal of the American delegates; resolutions to be submitted to Allied governments; and the constitution for national councils for developing scientific and industrial research.
1 bundle.
1879–1935
128 Correspondence on the Royal Society Catalogue Committee. Correspondence relating to the Royal Society Catalogue Committee regarding the formation of an International Catalogue of Scientific Literature, including lists of members of the committee and of astronomers, meteorologists and geologists selected to help make the catalogue; a draft of the proposed general subject index; a list of accepted headings; various comments on the scheme; and the proposed classification of gravitational astronomy.
1 bundle.
1896–1898
129 Papers on the Royal Society Government Grant Committee. Correspondence and reports relating to the Royal Society Government Grant Committee.
1 bundle.
1928–1929
130 Papers on the Royal Society. Miscellaneous papers concerning the Royal Society, including a report on P.M. Ryves' Observatory at Zaragoza, Spain; correspondence relating to the obituaries of Sir Thomas Muir, Professor A. Rambaut and David Gill; correspondence regarding Royal Society medals; and letters concerning submitted papers.
1 bundle.
1915–1936
131 Correspondence on the Royal Society. Correspondence regarding the Royal Society relating to papers submitted and the retirement of officers, including Charles Sherrington's retirement as President of the Royal Society and from its Board of Visitors and his replacement by Ernest Rutherford.
1 bundle.
1915–1932
132 Correspondence on the Royal Astronomical Society. Correspondence regarding the Royal Astronomical Society concerning the Astronomer Royal's nomination of candidates for a Fellowship. The nominees were Annie Maunder, Dr Silbersteine, P.A. Openshaw, Mary Proctor, F. Hope-Jones, Dr G. Stracke, Mr MacFarlane and N.C.C. Garvell. There are also summaries of the work of Monsieur Esclangon and Dr Ludendorff.
1 bundle.
1914–1932
133 Correspondence on the Royal Astronomical Society. Correspondence relating to Royal Astronomical Society business, regarding the substitution for the astronomer's day in nautical publications of the day commencing at midnight; nominations for the Gold Medal, 1915, 1917 and 1922; the R.A.S. Centenary Publication Committee and the History of the Royal Astronomical Society; publication of the Roberts observations; and lectures, meetings and geophysical discussions. There are also copies of various papers.
1 bundle.
1915–1931
134 Papers on Royal Astronomical Society committees. Papers relating to the business of Royal Astronomical Society committees, including a graph of the distribution of proper motions resolved in the direction of the solar ant-apex; papers of the R.A.S. Geophysical Society; a list of R.A.S. committees, 1927; Annual Reports of the Kew Observatory (general and Upper Air Section), 1934-1935; Annual Report of the Eskdalemuir Observatory, 1935; Annual Reports of the Valentia Observatory, 1934-1935; and a programme of sessions and ballot at the General Assembly of the Astronomical Society, Geneva, 1885.
1 bundle.
1885–1937
135 Correspondence on Franklin Adams charts. Correspondence regarding the Royal Astronomical Society's reproduction and marketing of the Franklin Adams Chart plates as prints, with balance sheets, statements of expenditure, receipts and a list of subscribers.
1 bundle.
1913–1923
136 Communications to the Royal Astronomical Society. Communications of the Astronomer Royal to the Royal Astronomical Society:. Correspondence relating to the Astronomer Royal and lists of photographs presented by the him to the R.A.S., 1905-1929, regarding negatives and photographs of the Sun, sunspots, solar eclipses, comets (1907 and 1908), planets (Jupiter and Saturn), satellites, nebulae (Andromeda and H.V.14 Cygni) and a copy of a portrait of Dr Glaisher. Correspondence and papers, 1916-1935, including reports on the work of the Royal Observatory, presented by the Astronomer Royal to the R.A.S.; summaries of work done by various astronomers; copies of the Annual Report of the Royal Observatory for 1917, 1925-1926 and 1928-1935; occultations of stars observed at the Observatory in 1916; and summaries of the work of Professor Russell and George Lecointe.
1 bundle.
1905–1935
137 Communications to the Royal Astronomical Society. Communications to the Royal Astronomical Society from other observatories, astronomers, etc., made through the Astronomer Royal, regarding papers submitted to the R.A.S. and other matters. There is also correspondence regarding papers sent to the Astronomer Royal for his perusal.
1 bundle.
1912–1927
138 Material on papers for the Royal Astronomical Society. Reports and correspondence regarding papers presented to the Astronomer Royal in order to obtain his opinion on their suitability for inclusion in Royal Astronomical Society publications.
1 bundle.
1913–1923
139 Papers on the International Astronomical Union. Papers regarding the International Astronomical Union, including the following material:. Correspondence, 1923-1925, regarding the Cambridge meeting of the I.A.U. on 14-22 July 1925, including letters relating to the date, agenda, invitees, schedule, visit and entertainments, and correspondence concerning the meeting of the National Committee of Astronomy to discuss resolutions to be presented to the I.A.U. Correspondence, 1934-1938, regarding the Paris meeting of the I.A.U. in 1935, including letters requesting information on the work of the Royal Observatory for inclusion in the Paris reports; discussion on the membership of various Paris committees; and discussion on the date of the Stockholm meeting, the transfer of the International Latitude Bureau, the plight of Professor Plager of the Berlin Observatory, and the printing costs of the Bulletin. There is also a report of the Commission on Gaussian Constant K. Miscellaneous correspondence concerning the I.A.U., 1924-1930, including replies to the reports of various observatories on their meridian work, 1924-1925, and correspondence concerning the state of the Paris Observatory, German astronomers joining the I.A.U. conference at Leiden, the Astrographic Catalogue and proposals to move the Radcliffe Observatory to South Africa. Miscellaneous correspondence concerning the I.A.U., 1930-1934, including letters relating to the Astrographic Catalogue, applications for grants, the I.A.U. trip to Montreal for the eclipse of 1932, Dyson's visit to America, German astronomers joining the I.A.U., the situation of Perrine at the Cordoba Observatory in Argentina, and the Latitude Commission.
1 bundle.
1923–1938
140 Correspondence on the Bureau Internationale de l'Heure. Correspondence concerning the Bureau Internationale de l'Heure relating to its organisation, financing and other issues. The correspondents include Colonel Stratton, General Secretary of the International Astronomical Union; M.G. Bigourdan, Director of the Bureau Internationale de l'Heure; H. Deslandres, Director of the Paris Observatory; and N.E. Nörland of the Geodetic Institute of Denmark.
1 bundle.
1928–1930
141 Correspondence with miscellaneous societies. Correspondence with miscellaneous societies, including the League of Nations, regarding a resolution on analytical bibliography; the International Research Council; the National Committee for Geodesy and Geophysics, regarding invitees to an international meeting at Madrid, 1924; and the International Astronomical Union, regarding payments of the French Government.
1 bundle.
1916–1929
142 Correspondence on the Royal Astronomical Society Club. Correspondence relating to the Royal Astronomical Society Club.
1 bundle.
1904–1908
143 Correspondence with the Royal Astronomical Society. Correspondence with the Royal Astronomical Society regarding its centenary and other matters:. Miscellaneous correspondence, 1921-1936, including letters concerning Mrs Oppotzer's plight and the sale of her husband's books and correspondence regarding obituaries of W.H.M. Christie and J.C. Kapteyn. There is also a 'List of reproductions of celestial photographs published by the Royal Astronomical Society', taken from 'Monthly Notices of the Royal Astronomical Society', February 1912. Correspondence with invitees and newspapers regarding the centenary of the Royal Astronomical Society, 1922.
1 bundle.
1921–1936
144 Correspondence with Cambridge University. Correspondence with, and official instructions from, Cambridge University, regarding the annual commemoration of benefactors; the appointment of the Astronomer Royal as an elector to the Professorship of Astrophysics and the Lowdean and Plumian Chairs; testimonials for R.A. Herman, R.H. Cowen, A.N. Whitehead and H.F. Baker, candidates for the Lowden Chair in 1913; the appointment of the Astronomer Royal as adjudicator of the Adams Prize; and the endowment of a Chair of Geodesy and a Geophysical Institute at Cambridge.
1 bundle.
1909–1936
145 Correspondence with 'The Engineer'. Correspondence with the editor of 'The Engineer' regarding the seismological, auroral and magnetic predictions of E.C. Thrupp, with cuttings from 'The Engineer'.
1 bundle.
1936–1938
146 Correspondence on time signals. Correspondence concerning time signals, including the following material:. Correspondence with E. Dent and Co. regarding irregularities in the Westminster Clock, tables of errors for the clock and newspaper cuttings relating to it, 1902-1906. Correspondence regarding the installation of a wireless-telegraph receiving station at Greenwich, 1912-1914. Correspondence of 1912-1915 regarding the inauguration of a wireless-telegraph time service from the Eiffel Tower and concerning the Paris conferences of 1912 and 1913 on the establishment of a Commission Internationale de l'Heure. The papers include a memorandum on the inauguration of the service; proposals, reports, projected statutes, etc., from the four commissions; draft and final reports and remarks and recommendations of the British delegates; a chart showing the time signal w/t stations to be established; Notices to Mariners, Nos 874 and 875, regarding Eiffel Tower signals; and a diagram illustrating the system of transmitting w/t signals. Correspondence with the Admiralty, the General Post Office and the Marconi Company regarding transmitting time signals from the Poldhu W/T Station in case of interruption at the Eiffel Tower, 1914-1915. General correspondence regarding w/t time signals, 1912-1914, comprised mainly of requests for advice and information on w/t apparatus and suppliers from other observatories, such as Liverpool, Kew and Hong Kong, and from members of the general public with a special interest in the Royal Observatory equipment. There are also letters concerning Indian sending stations, errors of time signals and experiments. General correspondence regarding time signals and time balls, 1919-1924, including correspondence with the Hydrographer and Edinburgh Observatory relating to the sending of time signals by the Royal Observatory to the Rosyth Chronometer Depot and the return signals; correspondence with the Air Ministry concerning equipment; and correspondence with the Horological Institute relating to the publication of the Astronomer Royal's lecture. Correspondence regarding the Mean Time Free Pendulum Clock, Shortt No. 49, 1934-1936, including correspondence with the Synchronome Company concerning its manufacture, including details, estimate, receipt, testing and problems; correspondence with the Hydrographer relating to the contract, testing and cellar for the clock; and correspondence with the Southern Railway Company regarding the performance of Shortt clocks Nos 3, 11, 16 and 49.
1 bundle.
1902–1936
147 Correspondence on time balls. (1) General correspondence regarding time balls, 1879-1893, including the following material:. Correspondence regarding reprints, ordered by G.B. Airy in 1880, of articles from 'Nature', 1876, concerning the distribution of time signals. Correspondence, 1879-1880, regarding the Prussian Government's request for information on colonial time in South Africa, Canada, India, St Helena, Mauritius, Australia, Tasmania and New Zealand, and similar requests from the U.S. Hydrographic Office. Advice given to the Transvaal Government with regard to a time ball for Pretoria, 1879. Information given to the Hydrographer regarding the Royal Observatory and the Deal Time Ball, 1880. Correspondence regarding the enquiry of M.L. Manchez concerning time signals, 1880. Correspondence with the Harbour Department regarding the transmission of time signals to different parts of the United Kingdom, 1880. Correspondence relating to Maxwell Hall's proposed system of time signals and storm warnings for the West Indies, 1878-1879. Correspondence regarding the Hong Kong Time Ball, 1883. Correspondence regarding the Amsterdam Time Ball, 1881. Correspondence regarding a revised list of time signals of the Hydrographic Department, 1885. Correspondence regarding the establishment and maintenance of British time balls, 1884-1888, including correspondence with Lloyd's relating to the setting up of time balls, providing the difference in time between Greenwich and various other places and the mean time of high tide at London Bridge and at various other ports, 1885. Correspondence regarding information supplied to Plymouth Borough engineers on time ball apparatus, 1885. Correspondence, newscuttings and a Harbour Board notice and report relating to the Southampton Time Ball, 1885. Miscellaneous enquiries regarding time balls, 1881-1892, including prices and estimates of the cost of apparatus, suppliers, etc.; advice on apparatus; and particulars of the Greenwich Time Ball. Correspondence regarding the Brisbane Time Ball, 1891, including its erection and cost, and correspondence with Saxby and Palmer concerning its manufacture. Correspondence with Crown agents and manufacturers regarding the time ball for the Grenada Government, 1892-1893, including specifications and estimates. (2) Correspondence regarding the time ball for the Straits Settlements (Singapore) on Mount Serapong, 1888-1892. The correspondents are Crown agents and firms involved with the time ball. There is correspondence with E. Dent and Co., regarding clocks; Troughton and Simms, regarding a portable transit circle; Messrs Fuller and Son, regarding the electric trigger apparatus; J. Mercer, regarding chronometers; V. Kullberg, regarding clocks; and Captain C. Crawford, regarding the testing of the transit circle. There are also plans and blueprints of the apparatus. (3) Correspondence with Lloyd's regarding the setting up of time balls at their signal stations at home and abroad, 1896. (4) Correspondence regarding proposed time balls, 1897-1905, comprised of advice on manufacturers and suppliers, equipment and apparatus, estimates and other matters, including the following material:. Correspondence with Crown agents regarding the time ball for Mauritius, 1897. Correspondence with Lloyd's, 1899, regarding the setting up of time balls at their signal stations at Tangier, Gibraltar and Malta and the transmission of the Greenwich Time Signal. Correspondence with the Oriental Telephone Company regarding electrical apparatus, 1904. Correspondence with M. Trépied regarding the time ball for Algiers. (5) Correspondence with the Master Attendant, Crown agents and E. Dent and Co. regarding the time ball and town clock for Colombo, Ceylon, 1912-1915, including details, specifications, reports of inspections, complaints, etc. (6) General correspondence regarding time balls, 1912-1927, including the question of what causes a time ball to drop and the irregularity of the Norwich Time Ball.
1 bundle.
1879–1927
148 Correspondence on longitude. Correspondence relating to longitude and its determination, including the following material:. (1) Correspondence regarding the Potsdam-Greenwich Longitude via Emden and Bracton, 1902-1904. There is correspondence with C.T. Albrecht regarding accommodation, equipment and arrangements with the General Post Office (G.P.O.); correspondence with the G.P.O. regarding the line between the Royal Observatory and Potsdam; and a copy of 'Longitude Difference between Potsdam and Greenwich', a Royal Prussian Geodetic Institute paper, in German, by Professor Albrecht, 1904. (2) Correspondence regarding the proposed determination of the Cairo-Greenwich Longitude, 1906-1907. There is correspondence with Professor Turner, Oxford University Observatory, and H.G. Lyons, Director General of the Survey Department of Egypt, regarding observers going to Egypt, their itinerary and equipment, and the funding of the expedition. (3) Correspondence regarding the determination of the longitude of Ascension Island and the incidental connection of the Royal Observatory and the Cape Observatory, 1907-1909, including the following material:. Correspondence with the Hydrographer regarding transit circle observations, errors and rates of the sidereal clock, loan of equipment, transport arrangements and signals. Correspondence with the Admiralty Secretary regarding Mr Pett making observations and the loan of equipment. Correspondence with the G.P.O. regarding the transmission of signals between Ascension Island and the Royal Observatory. Correspondence with Mr Judd of the Eastern Telegraph Company regarding signalling, relays and siphon arrangements. Correspondence with the observers Pett (Cape Observatory), Captain Simpson and Captain Monro regarding observations, telegraphic arrangements and signal tapes. Memoranda and notes, including lists of equipment, observations made and programmes of signalling, with a copy of pages 91-97 of 'Note on the Telegraphic Determination of Longitude Greenwich-Ascension-Cape in the Year 1908' by Sir W.H.M. Christie. (4) General correspondence regarding the determination of the longitude of Malta, 1908-1928, including the following material:. Memoranda regarding the determination, 1908-1909, including a copy of papers on the longitude of Spencer's Monument, Malta; a list of observations obtained with the transit circle; programmes of signalling; instructions to the electrician at Porthcurno; and lists of equipment, boxes, etc., sent out. . Correspondence with Mr Barrell, the Eastern Telegraph Company electrician at Porthcurno, regarding equipment and arrangements relating to the determination, 1919. Correspondence with Mr Eddington and H. Christie, observers at Malta, regarding equipment, 1909, including piers, clocks and measurements. Correspondence with the G.P.O., 1909, regarding a direct wire from the G.P.O. to the Eastern Telegraph Office and other arrangements, with diagrams and blueprints of arrangements, etc., and oscillograms of the G.P.O. standard relay. Correspondence with the Admiralty, 1908-1928, including correspondence with the Hydrographer regarding a site for the transit instrument and cable communications, 1907-1909; with Captain Nicholson regarding the feasibility of using wireless telegraph equipment, 1909; with the Accountant General regarding expedition expenses, 1909; with the Secretary of the Admiralty regarding employment for the expedition, 1909-1910; and with Admiralty and War Office, 1909-1928, regarding the determination trigonometrically of the difference of longitude and latitude between the site of the longitude station at St George's Bay and the flagstaff on the palace at Valetta, and also the site of Spencer's Monument, with further correspondence on a new triangulation of Malta and a copy of a report showing the results of the various surveys of Malta. (5) General correspondence regarding the determination of longitudes and latitudes, 1918-1928, including the following material:. Correspondence with the High Commissioner of Canada, 1918, regarding the whereabouts of T.L. Tiarck's papers of his boundary observations along the 45th Parallel (1817). Correspondence with the President of the International Commission on Longitude regarding longitude observations of Tokyo-Greenwich-Vancouver. Correspondence with the Admiralty and the Colonial Office regarding the scheme for the standardisation of longitudes. Correspondence with various observatories regarding w/t time signals and longitudes, including Wellington, New Zealand; Uccle, Belgium; Helwan, Egypt; U.S. Naval Observatory, Washington; Paris; and Adelaide. Summaries of results for the longitudes of Deakin and Kimberley (1921).
1 bundle.
1902–1928
149 Correspondence on clocks and chronographs. Correspondence regarding clocks and chronographs, including correspondence with the Japanese Consul and E. Dent and Co. on a chronograph for the Japanese Government, 1880; and correspondence relating to various inventions associated with clocks, 1886-1937, including Mr Schoof's gravity escapement (1897), the Synchronome Co. Ltd's synchronised pendulum (1937), Mr Gordon's pneumatic clock system (1886), and R.W. Nichol's pendulum (1913).
1 bundle.
1880–1937
150 Correspondence on a total eclipse. Correspondence and papers regarding A. Crommelin and C. Davidson's expedition to Sobral, Brazil, for the total eclipse of 29 May 1919. The purpose of the expedition was to determine whether light is deflected by gravitation in accordance with Einstein's Theory of Relativity. There are a number of photographs, a paper by Crommelin on the purpose of the expedition, computations, and two manuscript copies of an article by Davidson on the displacement of gelatine photographic films shown by precise measurement.
1 bundle.
1917–1922
151 Correspondence on grant to Mrs Jackson. Correspondence between F.W. Dyson, W.M. Roberts and A.J. Sylvester, the Prime Minister's Private Secretary, regarding the Grant of £250 from the Royal Bounty Fund to Mrs Jackson, widow of C.S. Jackson.
1 bundle.
1922
152 Insurance policy. An insurance policy in the name of the Astronomer Royal insuring against the loss of 200 volumes of astronomical tables valued at £1000 for a premium of £1.
1 bundle.
1920
153 Double stars journals. Micrometric observations of double stars.
2 volumes.
1919–1928
154 Observations of luminous meteors.
1 volume.
1912–1924
155 Clock comparisons and time signals.
1 volume.
1924–1925
156 Instrument issue book. A book of forms noting the issue of instruments, etc. The forms list the date, the name of the person to whom the item was issued, their address, their purpose in borrowing the instrument and remarks.
1 bundle.
1909–1929
157 Correspondence on the Maskelyne Papers. Correspondence between Mary Arnold-Foster (Mrs H.O. Arnold-Foster) and F.W. Dyson regarding the deposition of the Maskelyne papers.
1 bundle.
1911
158 Memorandum of Board of Visitors. A memorandum by F.W. Dyson regarding Professor Turner's letter to the Chairman of the Board of Visitors of the Royal Observatory.
1 bundle.
1913
159 Note on Prime Meridian article. A note concerning an article on the Prime Meridian for the 'Mariner's Mirror' and Jeffery's 'West Indian Atlas'.
1 bundle.
1927
160 Correspondence and speeches. A miscellaneous collection of papers relating to Frank Dyson:. 1. Envelope containing letters to Dyson from W.H.M. Christie, 9 September 1910, A. Montagu Butler, 9 September 1910, and James [ ], 12 September 1910, regarding Dyson's appointment as Astronomer Royal. 2. Undated photocopy of a letter from Dyson, Weld Club, Perth, W. Australia, to his wife Carrie, 2-3 August 1914. 3. Printed booklet containing Latin pieces assigned to various individuals, including Dyson, relating to the gathering at the Senate House, Cambridge University, 4 June 1929. 4. Undated photocopy of a typed speech on religion and science. 5. Sketch of Albert Einstein's head.
1 envelope.
circa 1910-circa 1980
161 Log of Greenwich Range Finder Station. The daily log of the Greenwich Range Finder Station listing activities and the time at which they were carried out.
1 volume.
12 Dec. 1915–28 Mar. 1917
162 Visitors' Book. A book containing the signatures and addresses of visitors to the Royal Observatory and the dates of their visit.
1 volume.
5 July 1933–26 Apr. 1951
163 Visitors' Book. A book containing the signatures and addresses of visitors to the Royal Observatory and the dates of their visit.
1 volume.
29 June 1897–2 Jan. 1914
164 Salary tables. The 1919 revised edition of salary tables for the use of the Civil Service and other establishments. (MISSING).
1 volume.
1919
165 Transit calculations. Form No. 2***, 'Calculations for reducing Imperfect Transits to the Transit over the Central Wire', for 3 December 1917 to 26 June 1924.
1 volume.
1917–1924
166 Material on the 1919 eclipse. A notebook titled 'Eclipse Expedition 1919 May 29 Sobral', containing an account of the expedition and additional information, and a glass photographic plate of the [May 1919] eclipse region taken on 6 May 1920, with an accompanying wax paper pro-forma giving information on the plate.
1 volume.
1919–1920
167 Notes on the 13" astrographic equatorial. A notebook containing details regarding the erection of the 13" astrographic equatorial, which was built by Sir H. Grubb and erected at Greenwich in 1890. Running from the back of volume, on the reverse of the page, are astronomical observations and some calculations. A note inserted in the book around 1983 seems to indicate that the first part of the volume relates to 1889, and the additions at the back concern the May 1919 total eclipse expedition at Sobral.
1 volume.
circa 1889-circa 1919
168 Papers on Jupiter's eighth satellite. Correspondence with John Jackson of the Royal Observatory of 1922-1924, published material and other papers regarding the eighth satellite of Jupiter, including the satellite's orbit and osculating elements. There are also tables of the computation of the standard coordinates of J. VIII observed with the 30-inch reflector of the Thompson Equatorial on 7 November 1917, 5 December 1917 and 7 and 11 January 1918.
1 bundle.
1917–1924
169 Magnitudes of Nova Cygni III. Magnitudes of Nova Cygni III from photographs taken with the 13" astrographic refractor at the Royal Observatory, 1920, and stars in the Kapteyn Selected Areas.
1 bundle.
circa 1920
170 Papers on the Hilger micrometer. Correspondence regarding the micrometer acquired by the Royal Observatory in 1932 from Adam Hilger Ltd, 1932-1933, with tables relating to the micrometer tests, the examination of the micrometer's screw and slide, etc.
1 bundle.
circa 1932-circa 1933
171 Notes on Harrison's Timekeepers. 'Notes on the Ownership of John Harrison's Timekeepers', a 9-page typescript by R.T. Gould, dated at the end 10 May 1937.
1 volume.
1937
172 Plate account book. An account book kept by P.J. Melotte of plates used for transparencies, etc.,.
1 volume.
1910–1928

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