. The comparative anatomy of the domesticated animals. Veterinary anatomy. THE INTEGUMENTARY APPENDAGES. 801 Fig. 371. Of the veins, at pages 612 to 616 ; Of the nerves, at pages 762, 763. It remains to notice the complementary apparatus of the third phalanx, and the heratogenous membrane. A. Complementary Apparatus op the Pedal Bone.—In the indication v/e gave of this apparatus at page 85, we' said that it was composed of two lateral pieces—the fibro-cartilages, xxnitei behind and below by the ^Zawtor cushion: a fibrous, elastic mass, on which the navicular bone rests, through the medium of t
. The comparative anatomy of the domesticated animals. Veterinary anatomy. THE INTEGUMENTARY APPENDAGES. 801 Fig. 371. Of the veins, at pages 612 to 616 ; Of the nerves, at pages 762, 763. It remains to notice the complementary apparatus of the third phalanx, and the heratogenous membrane. A. Complementary Apparatus op the Pedal Bone.—In the indication v/e gave of this apparatus at page 85, we' said that it was composed of two lateral pieces—the fibro-cartilages, xxnitei behind and below by the ^Zawtor cushion: a fibrous, elastic mass, on which the navicular bone rests, through the medium of the perforans tendon. We will take this distinction as the basis of our study. 1. FiBRO-OARTiLAGES OP THE Pbdal Bone.—Each of thesc pieces re- presents a plate flattened on both sides, having the form of an oblique-angled parallelogram, and prolonged behind the third phalanx. The external face is convex, and pierced with openings for the passage of veins; it slightly overhangs that of the pedal bone. The internal face is concave, channeled by vascular furrows, and covers, in front, the pedal articulation, and the synovial cul-de-sac which projects between the two lateral ligaments of that joint; below and behind, it is united to the plantar cushion, either through continuity of tissue, as at the in- ferior border, or by fibrous bands passing from one to the other. The upper border, sometimes convex, sometimes rectilinear, is thin and bevelled like a shell; it is separated from the posterior margin by an obtuse angle, in front of which this border is often broken by a deep notch that gives passage to the vessels and nerves of tlie digital por- tion. The inferior border is attached, in front, to the basilar and retrossal processes behind the latter, it is reflected inwards to become continuous with the tissue on the lower face of the plantar cushion. The posterior border is oblique from before to behind, and above to below, and joins the preceding two. The anterior border is
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