. Animal physiology. Physiology, Comparative; Physiology, Comparative. GENERAL STRUCTURE OF REPTILES. TURTLE TRIBE. 75 that in which they are subsequently to live, and also in having their bodies covered with horny scales or plates, whilst the skin of the Frog tribe is soft and unprotected. These differences are considered by some naturalists as sufficient to require the separa- tion of the Frog tribe into a distinct class, to which the name of Amphibia (which properly means animals that can live either in air or water) is given. 92. The Turtle tribe is peculiarly distinguished by the inclo- s
. Animal physiology. Physiology, Comparative; Physiology, Comparative. GENERAL STRUCTURE OF REPTILES. TURTLE TRIBE. 75 that in which they are subsequently to live, and also in having their bodies covered with horny scales or plates, whilst the skin of the Frog tribe is soft and unprotected. These differences are considered by some naturalists as sufficient to require the separa- tion of the Frog tribe into a distinct class, to which the name of Amphibia (which properly means animals that can live either in air or water) is given. 92. The Turtle tribe is peculiarly distinguished by the inclo- sure of the body in a bony covering ; of which the upper arched portion (termed the carapace) is formed by an expansion of the. p f Fig. 23.—Skeleton of the Turtle. ribs, which grow together, as it were, at their edges, so as to form a continuous plate ; whilst the lower flat plate (termed the. 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 Carpenter, William Benjamin, 1813-1885. London : Wm. S. Orr and Co.
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