. Agricultural zoology. Zoology. AMPHIBIANS. 79 the back, which, however, do not form a continuous band. Head dark velvety black. Devours lizards and blindworms. The Blindworm (Anguis fragilis) is indeed snake-like, or rather worm-like (Fig. 49), but nevertheless belongs to the lizards, with which its' internal structure agrees. CLASS IV.: AMPHIBIA (AMPHIBIANS). Cold-blooded Vertebrates (p. 19). The heart has only one ventricle and two auricles (cp. p. 21). The skin is naked, damp, usually slippery and smooth; it helps in respiration. Although several Amphibians resemble various ReptOes in out
. Agricultural zoology. Zoology. AMPHIBIANS. 79 the back, which, however, do not form a continuous band. Head dark velvety black. Devours lizards and blindworms. The Blindworm (Anguis fragilis) is indeed snake-like, or rather worm-like (Fig. 49), but nevertheless belongs to the lizards, with which its' internal structure agrees. CLASS IV.: AMPHIBIA (AMPHIBIANS). Cold-blooded Vertebrates (p. 19). The heart has only one ventricle and two auricles (cp. p. 21). The skin is naked, damp, usually slippery and smooth; it helps in respiration. Although several Amphibians resemble various ReptOes in outward appearance (Newt and. Fia. 50.—Great Crested Newt (^Triton cristatus); male above, female below. Lizard, Figs. 50 and 46), the structure of the skeleton is quite diflFerent. Upon the whole, Amphibians resemble fishes more closely, and they breathe by gills when they are young, which strengthens the agreement. They undergo a metamorphosis. The just hatched young at first hold fast by suction to the jelly of the spawn; they have external gills. They. 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 Bos, Jan Ritzema, 1850-1928; Ainsworth Davis, J. R. (James Richard), 1861-1934. London, Chapman & Hall, Ld.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1894
