Correspondence and printed papers on chronology, geography and the tides. The correspondents include W. Whewell, J.C. Adams, J.R. Hind, J.W. Bosanquet, W.H. Barlow, P.A. Hansen, J.F. Encke, W.H. Smyth, J.B. Biot, J. Washington, W.H. Miller, M. Corbeaux, J. Lee, R. Fitzroy, J.W. Blakesley, Lord Lindsay, J. Williams, J. Wood, P.S. Stanhope, G. Dawson, J.F. Burgoyne, W. Selwyn and D. Livingstone. There is a paper on the date of the death of Olaf the Fat (Saint Olave); a geometric projection of two-thirds of the sphere; a map of Kent showing Caesar's route; a tracing of the Coast of Palestine; booklets on great circle sailing; and newspaper cuttings on the latitude of Chicago.