Correspondence with Dr Shettie concerning terrestrial magnetism, 1880.

Correspondence with F.M. Almond concerning the effects of fog on a compass, 1880.

Correspondence with F.B. Heate concerning his theory that terrestrial magnetism could be caused by electricity, 1880.

Request from the Hydrographer of the Navy, 1881, on behalf of Captain Count Oscar Cassini, Austrian Naval Attaché, for information on how to obtain a copy of 'Instructions for observations on Earth's magnetism issued for the Royal Observatories' (the correct title is 'Revised instructions for use of magnetical and meteorological observatories', published by the Royal Society, 1842).

Copy of an article on Earth currents by William Ellis, 1882, sent to 'Nature' for publication.

Correspondence with J.G. Lawrie concerning a paper by Sir George Airy on a correction of compasses, with a copy of an article by W. Ellis on the 'Connection between eclipses of the sun and terrestrial magnetism' for the 'Observatory' magazine, 1883

Article by T.W. Ramm, Canada, on 'The Aurora Borealis', from 'The Operator and Electrical World', 3 March 1883.

Correspondence with Balfour Stewart and the Mid-Lincolnshire Iron Co. concerning magnetic phenomena, 1884.

Correspondence with Duncan Forbes concerning sunspots and magnetic disturbances, 1885.

Correspondence with R.S. Ball concerning terrestrial magnetism, 1885.

Correspondence with G.A. Rowell requesting the Astronomer Royal's opinion on his paper on 'the cause of a change in the declination of the needle', 1887.

Correspondence with H. Wilson concerning thunderbolts, 1887.

Correspondence with J.A. Menzies, Venice, concerning magnetic variation, 1887.

Correspondence with H. Job concerning the discoveries of Sir John Ross, 1888.

Letter from A. Hutt forecasting unsuccessfully 'a vivid display of aurora', 1888.

Rough, printed prospectus for the Gilbert Club and a numbered application form, 1889.

Letter from A. Downing to A.W. Rücker, 1890, requesting a copy of 'A Magnetic Survey of the British Isles for the epoch 1886 January 1' by Rücker and T.E. Thorpe, which appeared in 'Philosophical Transactions of the Royal Society', Vol. 181, 1890, pp. 53-328.

Reprint of a page from the 'Colliery Guardian', 2 January 1891.