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St John's Library/Adams/Box 16 contains:
<-- See earlier
44/1 Copy of autograph letter signed to John Lubbock
45/1 Autograph letter signed to George Martin
46/1 Autograph letter signed to J.E.B. Mayor
47/1 Draft autograph letter to Charles Merivale
48/1 Draft autograph letter to Latimer Neville
49/1 Draft autograph letter signed to Simon Newcomb
50/1 Draft? autograph letter to George Phillips
51/1 Autograph letter signed to James Porter
52/1 Draft autograph letter to Victor Puiseux
53/1 Draft? autograph letter signed to Edward Roberts
54/1 Draft speech to Royal Society
See later -->
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Papers of John Couch Adams

Title Draft autograph letter signed to Simon Newcomb
Reference 16/49/1
Creator John Couch Adams, 1819-1892
Covering Dates 10 Feb. 1880
Extent and Medium 12p; paper
Content and context

Proper comparison of Hansen's and Delaunay's equations of Longitude, Latitude and Parallax [of the moon] much needed. Description of such comparisons as already exist. JCA's own parallax tables. Tables of Moon's Ephemeris might be obtained from Hind: JCA will enquire. Hill's computation of the perturbations of Jupiter and Saturn very worthy.

Index Terms
Adams, John Couch (1819-1892) astronomer
Newcomb, Simon (1835-1909) astronomer
Hansen, Peter Andreas (1795-1874) astronomer
Delaunay, Charles-Eugène (1816-1872) astronomer and mathematician
Hind, John Russell (1823-1895) astronomer
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