DARWIN, Charles (1809-1882). On the Origin of Species by Meand of Natural Selection. London: John Murray, 1873. 8vo (182 x 117 mm). Folding table. Later half calf, spine gilt, edges marbled. Sixth edition. -- Different Forms of Flowers. London: John Murray, 1884. 8vo (188 x 125 mm). (Short tear to upper margin of title.) Publisher's green cloth, spine gold-stamped, edges uncut. Third thousand. -- The Structure and Distribution of Coral Reefs. London: Smith, Elder, & Co., 1889. 8vo (190 x 128 mm). Half-title, folding maps printed in color (a few short tears). Publisher's green cloth, spine gold-stamped, edges uncut (some light wear to extremities). Third edition. Provenance: H.M.S. Stationery Office (stamp on half-title); A. Ralph Thompson (typed label on pastedown). -- Together, 3 volumes.