Darwin, Charles. ON THE ORIGIN OF SPECIES by Means of Natural Selection, or The Preservation of Favoured Races in the Struggle for Life. By Charles Darwin. (A Reprint of the First Edition). With a Foreword by Dr. C. D. Darlington, F.R.S. Reduced demy 8vo; pp. xxii, 426; double-page diagram, index; original cloth; (a little foxing towards end); a nice copy in worn dustwrapper. London; Watts & Co.; (1950).