The exterior of the horse . compressed betweenthe wall and the third phalanx, becomes extremely sensitive, which obliges theanimal to walk upon the heel, or even renders all support by the foot founder, in this case, is called acute, for it is accompanied by phenomenagenerally very intense. If the temperature fall, the symptoms ameliorate, and inflammatory phe-nomena gradually invade the tissues pre-viously congested, the keratogenous mem-brane, at this level, becomes the seat ofan abnormal and exaggerated secretoryfunction, characterized by a profound de-formity of the hoof and
The exterior of the horse . compressed betweenthe wall and the third phalanx, becomes extremely sensitive, which obliges theanimal to walk upon the heel, or even renders all support by the foot founder, in this case, is called acute, for it is accompanied by phenomenagenerally very intense. If the temperature fall, the symptoms ameliorate, and inflammatory phe-nomena gradually invade the tissues pre-viously congested, the keratogenous mem-brane, at this level, becomes the seat ofan abnormal and exaggerated secretoryfunction, characterized by a profound de-formity of the hoof and a decided altera-tion in the form and relation of the inter-nal osseous structures. It is this whichFig. 123. ^ constitutes chronic founder or laminitis. The foot, in such cases, assumes anoval form and the wall is decidedly rammy ; its toe acquires an enormous thick-ness and becomes convex ; its heels are high and touch the ground first in loco-motion. The sole, compressed by the plantar border of the third phalanx, loses. THE FOOT. 339 its concavity ; it presents, towards the toe, a swelling in the form of a crescent ;its peripheral border, finally, is separated from the inferior border of the wall atthe toe and the mammae by a voluminous xoedge of podophyllous horn. Thelatter may be solid, or it may contain an internal cavity {seedy-toe), filled by areddish, dry, porous mass formed by the residue of the serous and bloody exu-date from the podophyllous tissue, which the farrier at times fraudulentlyendeavors to conceal with the shoe. Seedy-Toe.—This condition is not always due to founder, because thecavity by which it manifests itself may exist under the sole as well as under thewall. This allows us to distinguish two varieties of seedy-toe : that of the so^eand that of the ivall. The first is much less grave than the second ; it is occa-sioned by strong contusions of the velvety tissue ; percussion of the sole overthis region is resonant as soon as the cavity is formed. F
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Keywords: ., bookcentury1800, bookdecade1890, booksubjecthorses, bookyear1892