The Cambridge natural history, Vol. 03 (of 10)Note 78 — Chapter II · LAND AND FRESH-WATER MOLLUSCA, THEIR HABITS AND GENERAL ECONOMYReading editionT. D. A. Cockerell, Science Gossip, 1885, p. 211.◇Copy noteReturn to CHAPTER II LAND AND FRESH-WATER MOLLUSCA, THEIR HABITS AND GENERAL ECONOMY