The Cambridge natural history, Vol. 03 (of 10)Note 102 — Chapter II · LAND AND FRESH-WATER MOLLUSCA, THEIR HABITS AND GENERAL ECONOMYReading editionThomas, quoted by Jeffreys, Brit. Conch. i. p. 30.◇Copy noteReturn to CHAPTER II LAND AND FRESH-WATER MOLLUSCA, THEIR HABITS AND GENERAL ECONOMY