. Elements of zoölogy : a textbook. Zoology. .'392 MOLLUSC A CONSIDERED AS A BRANCH. F:G. 526. FIG. 527. Fig. Magnified portion of Pearl-shell. Magnified portion of Pinna. Magnified portion of Terebratula. not red. Their circulatory system consists of a heart, arteries and veins, and venous sinuses. Their respiratory organs are gills, or lung-like cavities. Their muscular system is well developed. Their nervous system is mainly FIG. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance
. Elements of zoölogy : a textbook. Zoology. .'392 MOLLUSC A CONSIDERED AS A BRANCH. F:G. 526. FIG. 527. Fig. Magnified portion of Pearl-shell. Magnified portion of Pinna. Magnified portion of Terebratula. not red. Their circulatory system consists of a heart, arteries and veins, and venous sinuses. Their respiratory organs are gills, or lung-like cavities. Their muscular system is well developed. Their nervous system is mainly FIG. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Tenney, Sanborn, 1827-1877. New York : Scribner
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Keywords: ., bookauthortenn, bookpublishernewyorkscribner, booksubjectzoology
