Royal Astronomical Society papers, comprising Secretary's letter-book 1822-1824, original papers submitted to the Society 1820-1900, and correspondence of Joint Permanent Eclipse Committee 1898-1912. Subjects include: Pacific exploring expedition; observations made by Sir Thomas Brisbane at Parramatta 1822-1825; report on Melbourne Observatory for 1878; expedition to Sumatra 1901 to observe total eclipse; and observation of 1908, 1910 and 1911 eclipses in Australia and Pacific.