. Comparative zoology, structural and systematic. For use in schools and colleges. Zoology. HOW AMMALS EAT. 61. FiQ. 24.—Month of the Crocodilp : d, toii-iie; r, ghuids ; /, iiifc-rior, aud (j, ^ii valve, separatiug the cavity of the mouth from the throat, h. In the Toad, Frog, and Cliameleon it is singularly exten- sile : rooted in front and free behind, it is shot from the mouth with such rapidity that the Insect is seized and swallowed more quickly than the eye can follow. Snakes have a slender forked tongue, consisting of a pair of mus- cular cylinders, which is solely an instrument of tou
. Comparative zoology, structural and systematic. For use in schools and colleges. Zoology. HOW AMMALS EAT. 61. FiQ. 24.—Month of the Crocodilp : d, toii-iie; r, ghuids ; /, iiifc-rior, aud (j, ^ii valve, separatiug the cavity of the mouth from the throat, h. In the Toad, Frog, and Cliameleon it is singularly exten- sile : rooted in front and free behind, it is shot from the mouth with such rapidity that the Insect is seized and swallowed more quickly than the eye can follow. Snakes have a slender forked tongue, consisting of a pair of mus- cular cylinders, which is solely an instrument of touch. Birds are without lips or teeth, the jaws being covered with horn forming a beak. This varies greatly in shape, being extremely wide in the Whip-poor-will, remarkably long in the Pelican, stout in the Eagle, and slender in the Hummer. It is hardest in those that tear or bruise their food, and softest in water-birds. The tongue is also cov- ered with a horny sheath, and generally spinous, its chief function being to secure the food when in the mouth. It is proportionally the largest and most fleshy in the Par- rots. The main characteristics of the mammalian mouth are fleshy lips and mobile ; In the duck-billed Mon- otremes lips are wanting, and in the Porpoises they are barely represented. But in the herbivorous quadrupeds. 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 Orton, James, 1830-1877. New York, Harper and brothers
Size: 1885px × 1325px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookpublishe, booksubjectzoology
