Note 336 — Chapter IX · THE SHELL, ITS FORM, COMPOSITION AND GROWTH—DESIGNATION OF ITS VARIOUS PARTS
Reading edition
Dr. W. B. Carpenter, Rep. Brit. Ass. xiii. p. 71; xiv. p. 1; xvii. p. 93; J. S. Bowerbank, Trans. Micr. Soc. i. p. 123; Ehrenbaum, Zeit. wiss. Zool. xli. p. 1.