. The comparative anatomy of the domesticated animals. Veterinary anatomy. THE INTEGUMENTARY APPENDAGES. 807 tious is confounded with the frog and sole; the lower appears between these two parts, and is effaced at a certain distance from the point of the frog. Sole.—The sole is a thick horuy plate comprised between the inner bor- der of the wall and its reflected prolongations ; thus occupying the inferior face of the hoof. It offers two faces and two borders or circumferences. The inferior, or external face, forms a more or less concave surface according to circumstances. The superior, or int
. The comparative anatomy of the domesticated animals. Veterinary anatomy. THE INTEGUMENTARY APPENDAGES. 807 tious is confounded with the frog and sole; the lower appears between these two parts, and is effaced at a certain distance from the point of the frog. Sole.—The sole is a thick horuy plate comprised between the inner bor- der of the wall and its reflected prolongations ; thus occupying the inferior face of the hoof. It offers two faces and two borders or circumferences. The inferior, or external face, forms a more or less concave surface according to circumstances. The superior, or internal face, corresponds to the peripheral portion of the velvety tissue; it shows a multitude of little .pertures analogous to those of the cutigeral cavity, into which are inserted the papilla) of the keratogenous membrane. The external border, or large circumference, is united, throughout its extent, to the inner contour of the lower border of the wall, by means of its denticulfe, which are reciprocally dovetailed into those on the inner face of the wall near its inferior border. The internal harder, or small circumference, is a deej), V-shaped notch, widest behind, which cor- responds to the bars, and at the bottom of which the point of the frog is fixed, Fkog.—This is a mass of horn, pyramidal in shape, and lodged between the two re-entering portions of the wall. It offers four planes (or sides), a hase, and a summit (or point). The inferior and the two lateral "planes con- stitute the external surface of the organ. The first is hollowed by a longitudinal excavation, which is shallow in well-formed hoofs, and is named the median lacuna of the frog, separating the two salient portions, or branches, which di- verge posteriorly and join the heels. Tlie other two planes are directed obliquely downwards and inwards; they adhere closely, at their upper third, to the external side of the bars, and anteriorly to the inner border of the sole. " This union is so close t
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