The Origin of Species (Sixth Edition, Thirty-Third Thousand).

The last edition published during Darwin's lifetime and the last to include his own amendments before he died. 

Hardcover. English. John Murray. 1888 Thirty-Third Thousand). vii & 328 pp with 32 page publisher's catalogue at rear. In the original green cloth with gilt title on spine, corners bumped and top and bottom of spine damaged; rear hinge cracked but holding light foxing throughout - a fair copy. Name inside. Book No: 2504665