London. Royal Astronomical Society, 1900. [2], 632 pages., together with an Appendix [66 pages], 'List of Works presented to the Society, paged 33-66.pp. Illustrated with 24 full-page plates, some folding, and with diagrams etc., within the text. Bound in half calf over marbled boards, recently rebacked. Octavo. Ex-libris Ministry of Defence with their stamp to the title-page, ‘withdrawn’ stamp to front endpaper. A very good copy.