The exterior of the horse . gs. 109 and 117), is transformed, inwardly, into a semi-cylindrical gutter, g ( and 113), which traverses itsentire length and lodges the cor-onary band. It is at the regionof this gutter, called the cutigeralcavity, which becomes effacedtowards the region of the bars,that the parietal horn is elabo-rated by the cutaneous thicken-ing in question. b. The Sole.—The sole is alarge horny plate (Fig. Ill),deeply notched behind for thereception of the frog, which oc-cujiies the inferior fece of thefoot. Concave inferiorly andconvex superiorly, it fills the interva
The exterior of the horse . gs. 109 and 117), is transformed, inwardly, into a semi-cylindrical gutter, g ( and 113), which traverses itsentire length and lodges the cor-onary band. It is at the regionof this gutter, called the cutigeralcavity, which becomes effacedtowards the region of the bars,that the parietal horn is elabo-rated by the cutaneous thicken-ing in question. b. The Sole.—The sole is alarge horny plate (Fig. Ill),deeply notched behind for thereception of the frog, which oc-cujiies the inferior fece of thefoot. Concave inferiorly andconvex superiorly, it fills the interval which exists between the inferior borderof the wall, the bars, and the point of the frog. Its superior or internal face (Fig. 114, a) is studded with porosities in whichare embedded the numerous papillae of the velvety tissue, and receives thepressure of the third phalanx. The inferior, f {¥\g. Ill), excavated, arch-like, and in contact only with theinequalities of the ground in the wild horse, is hard, dry, and J n J n m D I j Fig. 113.—Transverse section of the hoof (anteriorpart). THE FOOT. 319 Of the two borders, the external or anterior describes almost a semi-circum-ference, and unites intimately with the inferior border of the wall. The internalor posterior, on the contrary, much less extensive, simulates a re-entering angle,like the letter V, whose sides are adherent to the bars and the frog. e. The Frog.—The frog is a wedge or pyramid of soft horn, which coversthe plantar cushion, whose form it reproduces. Lodged in the angle formed bythe bars and the posterior border ofthe sole, it is seen to be single infront and bifid behind ; two facesand two extremities are thus assignedto it. The superior or internal face,b (Fig. 114), is the reverse of the in-ferior face of the plantar cushion ;it presents, consequently, a markedrelief on the median line, knownunder the name frog-stay, m ( and 115), and on each side twogutters, ti, n, converging in front
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Keywords: ., bookcentury1800, bookdecade1890, booksubjecthorses, bookyear1892
