Wells, Samuel R. (Samuel Roberts), 1820-1875 · New York, Fowler and Wells · leaf 599
the preceding class. 4. Mollusca.—Coming to the oysters, clams, and other shell-fish, we find an alimentary apparatus forming a distinct organ, with several convolutions,a liver, and a circulatorysystem, having for its cen-ter a heart with one ven-tricle or chamber, and con-taining a watery… … Fig. 867.—The Nautilus. e When the sea is calm, groups of these animals may be seen navigatingthe surface of it, employing six of their tentacula as oars, and raising the AN ASCENDING SEEIES. 593 5. Aisjnulata.—Some naturalists place this class, which in-cludes the sea-worms, below the mollusca,…
Physiognomy · Phrenology
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