viii, 178 pp. Frontispiece portrait from a photograph of the author. (12mo) original decorative light green boards, stamped and lettered in black, publisher's color pictorial jacket. First Edition.
Later issue jacket listing the first 19 titles in the John O'London's Little Books series, of which Darwin's book is No. 18 in the series. Murdoch 194; D&M 14240; D&J D6820.