London. Royal Astronomical Society, 1905. 883 pp, plus two appendices [28], and 'List of Additions', pages 205 - 234. Illustrated with 23 full-page plates, some folding, and within the text. Bound in half-calf gilt over marbled boards, recently re-backed; inner joints strengthened. Octavo. Ex-libris Ministry of defence with ‘withdrawn’ stamp to front endpapers and to title-page; lacks plates 10 & 13, with plates duplicates of plates 11 & 12 bound in their place; else a very good copy.