London: Royal Astronomical Society, 1885. [2], 525 pages, plus 'List of Presents' 20 pages. Illustrated with 5 plates, some of which are folding. Bound in half-calf gilt over marbled boards, recently re-backed. Octavo. Ex-libris Admiralty Library with ‘withdrawn’ stamp to front endpapers and to title-page; else a very good copy.