. Principles of veterinary science; a text-book for use in agricultural schools. Veterinary medicine. THE DIGESTIVE SYSTEM 75 twenty-one years old. The infundibulum gradually becomes smaller, nearer the lingual border, and finally disappears. It remains longer in the upper than the lower incisors because of its greater depth; therefore the latter should be observed when determining the age of a Pig. 21.—Skull of ox two years of age, sculptured to show the embedded parts of the teeth: Jl-4, permanent incisor teeth, the third and fourth not erupted; Di3, 4, third and fourth deciduous inc
. Principles of veterinary science; a text-book for use in agricultural schools. Veterinary medicine. THE DIGESTIVE SYSTEM 75 twenty-one years old. The infundibulum gradually becomes smaller, nearer the lingual border, and finally disappears. It remains longer in the upper than the lower incisors because of its greater depth; therefore the latter should be observed when determining the age of a Pig. 21.—Skull of ox two years of age, sculptured to show the embedded parts of the teeth: Jl-4, permanent incisor teeth, the third and fourth not erupted; Di3, 4, third and fourth deciduous incisors; Pl-3, upper permanent premolars, only first erupted; Dp 2, 3, deciduous premolars; Ml-3, molars. (Sisson, Anatomy of Domestic Animals.) The formula for the permanent teeth of the ox is: 0„0 „3 „,3\ >mn»()-» The ox has no incisors in the upper jaw (Fig. 21). There are eight incisors in the lower jaw. They are simple teeth without infundibulum so present no cup. The crown is white, short, and Digitized by Microsoft®. 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 Hadley, Frederick Brown, 1880-. Philadelphia and London, W. B. Saunders Company
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectveterin, bookyear1920
