MS.Add.5749: G.H. Darwin, papers on the tides, in various hands, 1882-1895, 61 folios.
MS.Add.5750: Correspondence on the tides, nos 1-118, 1882-1884. The correspondents include G.H. Darwin, J.C. Adams, A.W. Baird, Edward Roberts, J.T. Walker, E. Neison, R. Strachey, William E. Darwin, J. McDonald, Alfred Whitehouse, Cambridge University Press, Richard H. Stotherd, J.S. White, C. Crone, Carl H. Ryder, G. Herbert Bolland, Sir Richmond Ritchie, W.H. Coombs, E.B. Knobel, Sir Frederick John O. Evans, William Pearce, Edmond P. Dubois, Sir Horace Darwin and Ernest H. Wedgwood. There is also a Report on Tidal Observations, undated and unsigned.