Theories and other items on the Sun, Moon and planets, including P.A. Hansen's supplementary solar tables; a letter from U.J.J. Le Verrier on the Sun's parallax; correspondence and calculations relating to the transits of Venus, 1874 and 1882; calculations of the opposition of Mars, with a graph of the path of Mars at the opposition of 1860 and a star chart showing the ecliptic between 19h and 21h right ascension 14° to 26° south declination at epoch 1825; a letter from J. Challis about a correction of the theory and elements of the orbit of Venus; correspondence with J.C. Adams about the secular equations of the Moon; and other correspondence on perturbations and solar and lunar tables.