1. The Formation of Vegetable Mould, Through the Action of Worms...
London: John Murray, 1883. Second edition (Ninth Thousand Corrected). 8vo. (viii), 328, (2) pp. (ads). Publisher's pebbled green cloth, stamped in blind and in gilt; all edges trimmed; dark green endpapers; prelims foxed. Freeman 1367

2. The Origin of Species by Means of Natural Selection...
London: John Murray, 1884. Sixth edition (Twenty-Sixth Thousand). (xxii) 458 pp. Bound as above; scattered light foxing; bookseller's ticket on front paste-down. Freeman 412

3. The Expression of the Emotions in Man and Animals
London: John Murray, 1890. Second edition. 8vo. viii, 394 pp. Bound as above; front leaf excised (likely half-title); prelims foxed; dampstaining to both boards and prelims. Freeman 1146

4. The Various Contrivances by Which Orchids are Fertilised by Insects
London: John Murray, 1890. Second edition, Revised. Fifth Thousand. 8vo. xvi, 300, 32 pp. (ads). Bound as above; ownership stamp of biology professor Barth Maina on first free leaf and title-page; prelims foxed. Freeman 810

5. The Descent of Man, and Selection in Relation to Sex
London: John Murray, 1896. Second edition, Revised and Augmented. Thirty-Third Thousand. 8vo. xvi, 693 pp. Bound as above; prelims foxed; contemporary ownership signature to half-title. Freeman 979

6. The Variation of Animals and Plants Under Domestication
London: John Murray, 1899. In two volumes. Eighth Impression of the Second Edition, Revised. 8vo. Bound as above; scattered foxing to prelims and text; armorial book-plate of Bernard Gore Brett mounted to front paste-down of both volumes. Freeman 898