Veterinary notes for horse owners : a manual of horse medicine and surgery . og, which is endowed with elasticity, and which consequently canbear pressure without getting its secreting membrane hurt; (3)the bars, which are continuations of the wall. We may readilysee that the weight-supporting functions of the frog, outer portionof the sole, and bars, should be fully utilised; for if the wall alonebe subjected to concussion, the resulting strain on that portionof the secreting membrane which the wall covers, namely, the sen-sitive laminae, may become so excessive, that laminitis may
Veterinary notes for horse owners : a manual of horse medicine and surgery . og, which is endowed with elasticity, and which consequently canbear pressure without getting its secreting membrane hurt; (3)the bars, which are continuations of the wall. We may readilysee that the weight-supporting functions of the frog, outer portionof the sole, and bars, should be fully utilised; for if the wall alonebe subjected to concussion, the resulting strain on that portionof the secreting membrane which the wall covers, namely, the sen-sitive laminae, may become so excessive, that laminitis may weight-^bearing surface at the toe is far broader than at theheels (Fig. 72, p. 217); for the slope of the foot is less, and thethickness of the wall greater, at the former, than at the portion of the sole— the seat of corn (Fig. 73, p. 221)—which lies in the angle formed by the wall and the bars, shouldon no account bear weight; because a part of the pedal bone isimmediately above it, and the sole which covers it is very thin. MEASUEINGf SLOPE OF HOOF 723. 46* 724 SHOEINa. Consequently the secreting membrane above it, is particularly-liable to injury. If we examine the worn shoe of a normal fore foot, we shallfind that it has sustained the greatest amount of wear a little tothe outside of the toe and not in the exact direction of the longaxis of the foot. In fact, the outside half of a normal fore footsustains more wear than the inside half, an inference which wemight draw from the fact that the horn of the former is thickerthan that of the latter. In order to meet the wear and tear to which the foot issubjected by contact with the ground, when the animal roamsabout under natural conditions, the horn of the wall is endowedwith the property of growing to a practically indefinite length;though the horn of the sole and frog will not increase beyond auseful limit. The thickness of the sole is regulated naturally Fig. 184.—Lowering hoof all round. Fig. 185.—Lowe
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