FIRST EDITION, second issue. 1p. ads, illus., fold. plates, 4pp cata. (Nov. 1872); foxing to prelims & plates. Orig. green cloth; rubbed, mottling on edges of front & rear boards & spine. Freeman 442, with Arabic numbering to plates. Originally intended to be a chapter in The Descent of Man (1871), this third major publication by Darwin, despite never being out of print, has come to be known as Darwin's 'forgotten masterpiece'. Although the publisher John Murray warned Darwin that printing the text with illustrations would have a negative impact on the book's profits, The Expression of the Emotions in Man and Animals has come to stand as an important landmark in book illustration.