Elements of biology, with special Elements of biology, with special reference to their rôle in the lives of animals elementsofbiolog00buch Year: 1933 COELOM CIRCULA TORY SYSTEM MANTLE MANTLE CAVITY DIGESTIVE CANAL SHELL GILL FOOT FIG. 51. PELECrPODA-RIGHT'SHELL FIG. 52 SCHEME OF CLAM STRUCTURE OF CLAM (CROSS SECT/ON) Figs. 48, 49, and 50.—Annelida. Fig. 49 is a diagram of general annelid body structure, particularly of the anterior region. Figs. 51 and 52.—Mollusca. The right shell of a clam and a diagram illustrating the arrangement of the internal structures of members of the class Pelec
Elements of biology, with special Elements of biology, with special reference to their rôle in the lives of animals elementsofbiolog00buch Year: 1933 COELOM CIRCULA TORY SYSTEM MANTLE MANTLE CAVITY DIGESTIVE CANAL SHELL GILL FOOT FIG. 51. PELECrPODA-RIGHT'SHELL FIG. 52 SCHEME OF CLAM STRUCTURE OF CLAM (CROSS SECT/ON) Figs. 48, 49, and 50.—Annelida. Fig. 49 is a diagram of general annelid body structure, particularly of the anterior region. Figs. 51 and 52.—Mollusca. The right shell of a clam and a diagram illustrating the arrangement of the internal structures of members of the class Pelecypoda when examined in cross section. (Figs. 49 and 52 after Kiihn: Grundriss der allge- nieinen Zoologie. Georg Theime, Leipzig.)
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