Anatomie et physiologie élémentaires : pour des collèges, des académies, des écoles et d'autres elementaryanato00hitc Année : 1869 90 Anatomie d'Hitchcock quadrupèdes se compose généralement de deux pièces, la division étant faite sur la ligne médiane du corps. Dans le porc, de cheval et de vache c'est constitué d'un seul os. Dans la baleine du Groenland c'est dans sa forme la plus simple, qui est celui de deux côtes cintrées. 197. Forme de crâne, de l'orang-outangs. Considérée comme un ensemble de la forme du crâne s'écarte le plus de celle de l'homme dans l'ordre le plus bas. Dans l'Ornithorynchus le visage est pro- désiré en un bec ou de loi, et dans le cheval le fac

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Elementary anatomy and physiology : for colleges, academies, and other schools elementaryanato00hitc Year: 1869 90 HITCHCOCK'S ANATOMY quadrupeds generally consists of two pieces, the division being made on the median line of the body. In the Hog, Horse and Cow it consists of a single bone. In the Greenland Whale it is in its simplest form, which is that of two arched ribs. 197. Form of Skull, of Orang Outangs.—Viewed as a whole the form of the skull departs most from that of man in the lowest orders. In the Ornithorynchus the face is pro- longed into a beak or bill, and in the Horse the facial por- tion of the head is four times larger than the cranial, exactly the reverse of the case in man. In the young Orang Outangs the form of the skull very closely resembles that of man, and in the adult the size of the exterior of the cranium nearly equals that of man, though its capacity is considerably less. 198. Teeth of Quadrupeds, Carnivorous, Herbivorous, Insectivorous and Barbed Teeth.—The Teeth of Mammals vary exceedingly. They may, however, be classed under the two divisions of flesh and vegetable eating, according to the food of the animal. Those made to live on meat are sharp and pointed, for simply tearing the flesh Fig. 100. into such small portions that it can be swallowed, while those eat- ing herbs and grass, have the front teeth with sharp edges like that of a knife for cropping the food, and back teeth with flat surfaces, or vertical ridges of enamel in- terspersed between the ivory or dentine, which act the same part when brought together with Teeth of a Lion (Carnivorous Animal )a lateral motion, aS do the Upper What of the Lower Jaw ? 197. In what orders does the head differ most from that of man? How does the skull of the Orang Outang differ from that of man? 198. What are the two kinds of teeth among mammals? Describe each. Give the reason why the teeth are furnished as they are.

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