. The anatomy of the domestic animals. Veterinary anatomy. '--r. OF HOR5E. ? the te«th have been exposed by i Fig. 337.—Lower Incisor Teeth of Horse. aval of the bone. Subject was five years old. and the embedded parts converge. The average total length of an incisor at five or six years of age is about two and a haK to three inches (ca. 7 cm.). They taper regularly from exposed crown to apex, without any constriction, and in such a manner that in yomig horses the masticatory surface is broad transverseh^; toward the middle the two diameters of a cross-section are about ecjual; near th
. The anatomy of the domestic animals. Veterinary anatomy. '--r. OF HOR5E. ? the te«th have been exposed by i Fig. 337.—Lower Incisor Teeth of Horse. aval of the bone. Subject was five years old. and the embedded parts converge. The average total length of an incisor at five or six years of age is about two and a haK to three inches (ca. 7 cm.). They taper regularly from exposed crown to apex, without any constriction, and in such a manner that in yomig horses the masticatory surface is broad transverseh^; toward the middle the two diameters of a cross-section are about ecjual; near the apex the antero-posterior diameter is considerably greater than the transverse. This fact is of value in the determination of age by the teeth, since the mas- ticatory surfaces at different ages represent a series of cross-sections. As the ex- posed crowTi wears down, the embedded part (reser\-e crownj emerges from the • EUenberger found, as the result of extensive observations (8000 subjects), that about 2 to 3 per cent, of mares have erupted canines in both jaws; that 6 to 7 per cent, have them in the upper jaw; while 20 to 30 per cent, have them in the lower jaw. The numerical variation in the above formula results from the fact that the first premolar ("wolf-tooth") is often absent and further that it is doubtful to what set it belongs when present. It is commonly not included in the 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 Sisson, Septimus, 1865-1924. Philadelphia Saunders
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectveterinaryanatomy
