The Cambridge natural history, Vol. 03 (of 10)Note 350 — Chapter IX · THE SHELL, ITS FORM, COMPOSITION AND GROWTH—DESIGNATION OF ITS VARIOUS PARTSReading editionW. H. Dall, Amer. Journ. Sc. xxxviii. p. 445 f.◇Copy noteReturn to CHAPTER IX THE SHELL, ITS FORM, COMPOSITION AND GROWTH—DESIGNATION OF ITS VARIOUS PARTS