Correspondence with J.R. Hind concerning the 'Nautical Almanac', regarding the positions of the small planets, solar eclipses and the contents of the almanac. There are letters to various people giving the Moon's place as observed from Greenwich and its error. The correspondents include P.A.E. Laugier, U.J.J. Le Verrier, A.E.B. Mouchez, T.E.V. Oppolzer, A.R. Clarke, F.F.E. Brunnow, J.H.C. Coffin, Sir D. Gill, R. Copeland and A.V. Auwers.