. An introduction to zoology [microform] : for the use of high schools. Zoology; Zoologie. 't ii •I I Fig. 53—The Torpedo or Electric Ray. Torpedo occidcntalis. ^. (U. S. F. C.) the Electric Rays (Torpedo) (Fig. 53) are singular in that the muscles of the pectoral fin are largely convorted into an electric organ. The Sharks (Fig. 54) are all carnivorous and voracious. Fig. 54.—The Homed Dog Fish. Squalus acanthias. |. (U. S. F. C.) forms of great strength and activity; some of the smaller ones (Mustelus) live on Shell-fish, but the largest species are often dangerous to man and attain a length
. An introduction to zoology [microform] : for the use of high schools. Zoology; Zoologie. 't ii •I I Fig. 53—The Torpedo or Electric Ray. Torpedo occidcntalis. ^. (U. S. F. C.) the Electric Rays (Torpedo) (Fig. 53) are singular in that the muscles of the pectoral fin are largely convorted into an electric organ. The Sharks (Fig. 54) are all carnivorous and voracious. Fig. 54.—The Homed Dog Fish. Squalus acanthias. |. (U. S. F. C.) forms of great strength and activity; some of the smaller ones (Mustelus) live on Shell-fish, but the largest species are often dangerous to man and attain a length of thirty to forty feet (Carcharodon, Selache). In all the Sub-Class the skeleton is cartilaginous, and the skin either smooth or roughened with minute teeth which are similar in structure to the more for- midable teeth of the jaws. They resemble the Ganoids in the structure of the heart and intestine, and in the unequal. 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 Wright, R. Ramsay (Robert Ramsay), 1852-1933. Toronto : Copp, Clark
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Keywords: ., bookcentury1800, bookdecade1880, bookpublishe, booksubjectzoology
