Papers relating to the Royal Astronomical Society. There are papers by Airy on occultations of stars and the phenomena of Jupiter's satellites, 1877, 1878 and 1879; spectroscopic results for the motions of stars in the line of sight; the determination of the mass of Mars; the conjunction of Mars and Saturn, 30 June 1879; the elements of Vulcan; the spectrum of Brorsen's Comet; and the determination of the longitudes of Berlin and Vienna. The papers also include an index to the miscellaneous papers in the 'Greenwich Observations'; a list of observations of the outer satellite of Mars; figures of the mean areas of sunspots measured on photographs; a paper on the mean heliographic latitude of sunspots for the years 1874 to 1879; an account of Mr Eddie's observations of the Southern Comet; a paper by Airy on the preparations to be made for observation of the transit of Venus, 6 December 1882; a paper by Airy on the theoretical value of the accelerations of the Moon's mean motion in longitude produced by the change of eccentricity of the Earth's orbit, followed by an addition; an extract from a letter by Maxwell Hall on the transit of Mercury and on solar parallax, 6 and 7 May 1878; a letter by Professor Sawitsch on the results of Russian pendulum observations; a note by Mr Pritchett on the conjunction of Saturn and Mars; correspondence with Mr Burnham on C.P. Smyth's cycle, including a printed sheet; correspondence on the Royal Astronomical Society Club; and general correspondence regarding the Royal Astronomical Society.