First lesson in zoology : adapted for use in schools . nakes are reptiles without legs. Thoughthis creature is blind and limbless, and would appear tohave a hard time in getting themeans of living, yet by adoptingthe mode of life of an earth-worm it thrives, and affords an-other of the instances, of whichthere are so many, of the har-mony in nature between animalsand their surroundings. Theskin is smooth externally, vidthminute scales embedded in eyes are minute, covered bythe skin (Fig. 181). The spe-cies inhabit the tropics of Southand Central America, Java, Cey-lon, and live like ear
First lesson in zoology : adapted for use in schools . nakes are reptiles without legs. Thoughthis creature is blind and limbless, and would appear tohave a hard time in getting themeans of living, yet by adoptingthe mode of life of an earth-worm it thrives, and affords an-other of the instances, of whichthere are so many, of the har-mony in nature between animalsand their surroundings. Theskin is smooth externally, vidthminute scales embedded in eyes are minute, covered bythe skin (Fig. 181). The spe-cies inhabit the tropics of Southand Central America, Java, Cey-lon, and live like earthworms inholes in the damp earth, feedingon insect larva. They are large,growing several feet in compressicduda of Suri-nam is viviparous, the young being born in water and pos-sessing external leaf-shaped gills. Toads and frogs.—These are the tailless either live in or by the edge of pools and brooks, andwhen attacked on land they can by vigorous leaps escape toa place of safety. Unlike other amphibians, they are. Fig. 182.—Young of Ccecilia, withthe gills, and head of the same af-ter tae gills have been absorbed. 176 FIBST LESSONS IN ZOOLOGY. powerful leapers, the legs being muscular, and their toesvery long. They can also run and climb. The lower Jawis usually toothless. In the toad there are no teeth ineither jaw; it swallows its food whole. The lower eyelid canbe drawn over the eye and the nostrils can be covered bymembranes, while the ears are covered externally by a largetympanic membrane. In the toad the skin, especially nearthe ear, is rough and warty, containing glands, which pourout an acrid, milky secretion, which may be distasteful to
Size: 1262px × 1980px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1894
