Miscellaneous pieces on longitude and solar eclipses. The papers concerning longitude include pieces to ascertain the longitudes of Boston (by W.C. Bond), Durham, Cork and Haulbowline, the boundary between the U.S.A. and Mexico, and Batavia. The longitudes of Ipswich and Madras are also briefly mentioned. The material on eclipses include the eclipse of the Sun of 11 May 1724, with a contemporary illustration; a map of the world; the solar eclipse of 19 July 1748; the lunar eclipse of 28 July 1852 and a letter by R. Sheepshanks; eclipses in 1853 and 1858; and J.F.J. Schmidt's German treatise on solar eclipses and English instructions for observing them.

There is considerable correspondence by J. Nasmyth, Richarda Airy and C.P. Smyth on the methods employed and observations of solar flares, with a number of watercolour illustrations. Other topics include observations of rockets for Dr Hussey; comparisons of chronometers; and observations of the Moon and culminating stars at Cambridge, U.S.A., and Port Stephens, N.S.W., Australia.