Darwin, Charles. The International Scientific Series. THE FORMATION OF VEGETABLE MOULD, through the Action of Worms, with Observations on their Habits. U.S. Edition; pp. [iv], 4, viii, 326, (adv.), (blank); 15 text figures, index; original red cloth, decorated in gilt & black; (covers a little marked, otherwise a nice copy). New York; D. Appleton and Company; 1895.