An introduction to the study of mammals living and extinctNote 148 — Chapter VIII · THE ORDERS SIRENIA AND CETACEA (continued 2)Reading editionDuvernoy, Ann. Sci. Nat.-Zoologie, sér. 3, vol. xv. p. 41 (1851).◇Copy noteReturn to CHAPTER VIII THE ORDERS SIRENIA AND CETACEA (continued 2)