. Age of the domestic animals : being a complete treatise on the dentition of the horse, ox, sheep, hog, and dog, and on the various other means of determining the age of these animals. Domestic animals -- Age; Teeth. MOLARS. 185 TUSKS. The tusks are much more developed in the male than in the female; they are prismatic in shape and curve outward and back- ward. In the wild hog they may attain an enor- mous length (six inches or more), pressing the upper lip upward and the lower lip downward and crossing each other in an X, the superior tusk passing behind the inferior; the two fre- quently ha
. Age of the domestic animals : being a complete treatise on the dentition of the horse, ox, sheep, hog, and dog, and on the various other means of determining the age of these animals. Domestic animals -- Age; Teeth. MOLARS. 185 TUSKS. The tusks are much more developed in the male than in the female; they are prismatic in shape and curve outward and back- ward. In the wild hog they may attain an enor- mous length (six inches or more), pressing the upper lip upward and the lower lip downward and crossing each other in an X, the superior tusk passing behind the inferior; the two fre- quently have their re- spective anterior and pos- terior faces much worn by the constant friction from their contact with each other. The tusks continue to grow during the life of the animal. The growth is diminished in the castrated male. MOLARS. The molars are di- vided into premolars and post-molars. The first premolar resembles very much the conical corner incisor tooth, but has two roots instead of one. It is placed in the interspace between the tusks and the other molars, being about twice as far from the latter as from the Fig. 170. Lower jaw of pig, showing permanent 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 Huidekoper, Rush Shippen, 1854-1901. Philadelphia ; London : F. A. Davis
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