John Murray, 1868.
First edition, first printing, first issue with vol i - 32pp ads dated April 1867 and five errata on 6 lines on pvi and vol ii with single advertisement dated February 1868 to rear and 9 errata on 7 lines on pviii. Complete in two volumes housed in a bespoke quarter green morocco gilt clamshell case with raised bands to spine. A very good+/near fine set. Clean boards with light wear to extremities. Bright gilt. No marks to boards of vol i & a couple of small scuffs & a few small bubbles to cloth on vol ii; Tiny Victorian booksellers label to endpaper "Howell & Day, New Street, Birmingham". Internally complete and clean. Old rubbed out pencil name to rear of endpaper in vol i and a few spots to blank endpapers only. No inscriptions. Original black endpapers uncracked on volume i and cracking to volume ii - textblock still very tight and firm. A much better than usual copy of this important natural history work.
1500 copies of the first issue printing. A well received expansion on his theories of "variation under domestication" from the first two Chapters of "Origin of Species" Notable for Darwin's theory on heredity which he calls pangensis and the first appearance of the Darwinian phrase the "Survival of the fittest"