. The animans and man; an elementary textbook of zoology and human physiology. * * O FIG. 102. The giant land-tortoise of the Galapagos Islands, Testudesp. These tortoises attain a length of four feet. (Photograph fromlife by Geo. H. Cole man, of a specimen brought to Stanford Universityby Snodgrass and Heller.) skin. With some reptiles, notably the chameleons, thecolors and markings can be quickly and radically changedby an automatic change in the tension of the skin. Specimens of some pond or land turtle common in thevicinity of the school should be obtained. The red-belliedand yellow-bellie
. The animans and man; an elementary textbook of zoology and human physiology. * * O FIG. 102. The giant land-tortoise of the Galapagos Islands, Testudesp. These tortoises attain a length of four feet. (Photograph fromlife by Geo. H. Cole man, of a specimen brought to Stanford Universityby Snodgrass and Heller.) skin. With some reptiles, notably the chameleons, thecolors and markings can be quickly and radically changedby an automatic change in the tension of the skin. Specimens of some pond or land turtle common in thevicinity of the school should be obtained. The red-belliedand yellow-bellied terrapins, or the painted or mud-turtlesare common over most of the United States. They may beraked up from creek bottoms or fished for with strong hookand line, using meat as a bait. They will live through the 206 THE ANIMALS AND MAN winter, if kept in a cool place, without food or special careof any kind. Observe their swimming and diving, the re-traction of head and limbs into the shell, the use of the thirdeyelid (nictitating membrane), and the swallowing of the KALEV
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Keywords: ., bookcentury1900, bookd, booksubjectphysiology, booksubjectzoology
