London: John Murray, 1868. First edition. Fine. 2 volumes octavo (23 cm). First issue points: 5 errata on 6 lines in Vol. I, and 9 errata on 7 lines in Vol. II. LACKS ADS, apparently discarded when bound by Henry Southeran. Bound in full tan polished calf, double-ruled in gilt; six-compartment spine tooled in blind and gilt, with black title labels. Marbled edges and endleaves. Ticket of Henry Southeran. A very handsome set! Darwin's sequel to the Origin of Species, including his first use of the term "survival of the fittest," and his much-admired essay on pigeons.