Paper by Balfour Steward 'On the secular change of magnetic dip at Kew', 1886.
Letter of acknowledgement of Captain Evans's paper on compass declinations round Britain, 1873.
Notice from Lewis Guidi, Director of the Meteoric and Magnetic Department of Valerio Observatory, 1876, which accompanied the meteorological and magnetic observations of July 1876.
'Magnetic observations at Kerguelen' by the Revd S.J. Perry F.R.S., from the 'Proceedings of the Royal Society', No. 179, 1877, with related correspondence, 1877-1878.
Chart from the Missouri Weather Service: 'Lines of equal transitions of the magnetic needle, 1878-1879'.
Correspondence with R. Röttger concerning unusual movements of the magnetic needle, 1879.
Observations on the magnetic storm of August 1880, sent by the Observatoire de Zi-ka-wei and the Meteorological Office, Toronto; and observations of the magnetic storm of January-February 1881 and magnetic tracings for 16-21 April 1882, sent by the Meteorological Office, Toronto.