Correspondence relating to sunspots and prominences, 1882-1884. There are two letters from Christie to 'Nature' concerning the magnetic storm of 2 October 1882 and the great sunspot of November 1882 respectively, and a letter to 'Nature' from W. Huggins regarding the solar corona. The papers also include undated internal notes on sunspot dimensions.

Correspondence with W. Huggins concerning phenomena of the solar corona and explanations thereof, 1885.

Correspondence with W. Huggins concerning the solar corona, 1885, with a copy of 'Science', Vol. VI, No. 142, pp. 362-363, which includes letters from W. Huggins and W.H. Pickering concerning photographing the solar corona.

Correspondence with Algar and Moulton on viewing solar prominences, 1885.

Correspondence with S.P. Langley of the United States, 1884, requesting information on the sunspot of 16 November 1882.

Correspondence regarding observations of sunspots, 1885.

Correspondence regarding sunspots seen with the naked eye, 1886.

Correspondence regarding solar theory and weather predictions using solar data, 1885.

Lists of the most widened lines in the solar spectrum observed at Kensington [1886].

Correspondence regarding the visibility of spots and with W. Huggins concerning solar rotation, 1886.

Correspondence with W. Lawrance concerning coronal streamers seen on photographic plates of the Sun by P.J.C. Janssen and with F. Rowley regarding a spot seen and thought to be a planet, 1887.

Correspondence concerning sunspots and prominences, 1888.

Correspondence with various individuals concerning solar observations, and with W. Huggins on prominences, the areas of sunspots, the mean daily areas of the spots, and sunspots and the weather 1889.

Correspondence with E.L. Trouvelot, Meudon, 1891, concerning the solar outburst of 17 June 1891.

Correspondence relating to the great sunspot of February 1892; general correspondence with individuals; a cutting from the 'Globe', 18 February 1892, containing an interview with the Astronomer Royal, with subsequent correspondence; and a request from the 'Pall Mall Budget' for a photograph of a sunspot, with a cutting including the resulting article and photograph. The papers date from 1892.

Miscellaneous correspondence with various individuals concerning sunspots, 1891-1892, including the size of sunspots, the origins of sunspots and other solar phenomena, and the relation between solar phenomena and the weather, including a small booklet by T.S.H. Sheerman: 'The Connection between Solar Disturbances and Terrestrial Magnetic Disturbances'.