The Descent of man and selection in relation to sex.
First edition, second issue (without the errata to verso of title of vol. II and errors in vol. I corrected). 8vo., viii, 423; ix, 47 5pp., ads to verso of title, 16 pages ads dated January 1871 at end of both volumes, illustrations in text, publisher's green cloth, rules in blind to boards, titles to spines gilt. Contemporary ownership inscription to each front free endpaper, minor rubbing to extremities, hinges repaired, trivial spotting early and late. An excellent set.