Miscellaneous material on ancient eclipses, Caesar's invasion and computations for map projections, including computations for the eclipses in 851 BC, 841 BC and 1133 AD; B.W. Savile's views on the time-scale of Creation; J.H. Humphrey on Egyptian chronology; the derivation of the names of the days of the week; 'Use and Principles of combined Mercator and Gromonic charts'; the landing places of Caesar and his winter passage of the 'Cavennes'; D. Livingstone's letter in a newspaper concerning his Zambezi expedition; the projection of map calculations and Airy's 'explanation of a projection by balance of errors' (for maps); a paper titled 'Description of the projection used in the Topographical Department at the War Office'; a paper by J.D. Graham titled 'A lunar tidal wave in Lake Michigan'; J. Harrison's work on the Mersey Conservancy; and a French newspaper article on high tides. The correspondents include, among others, E.B. Pusey, B.H. Cooper, W.H. Smyth, A. de Morgan, B.W. Savile, J.R. Hind, J. Washington, E.W. Brayley, A. Way and J.F.W. Herschel.