The Cambridge natural history, Vol. 03 (of 10)Note 122 — Chapter II · LAND AND FRESH-WATER MOLLUSCA, THEIR HABITS AND GENERAL ECONOMYReading editionArch. Zool. Exp. Gén. (2) v. p. 459 f.◇Copy noteReturn to CHAPTER II LAND AND FRESH-WATER MOLLUSCA, THEIR HABITS AND GENERAL ECONOMY