. The anatomy of the domestic animals. Veterinary anatomy. 558 THE I'RINARY ORGANS OF THE HORSE Chauveau gives as an average 750 grams for the right kidney and 710 grams for the left. EUenberger and Baum (24 cases) give the right kidney as varying between 430 and 840 grams; and the left between 425 and 780; this is an average of 635 grams (about 22}'2 ounces) for the right kidney, and grams (about 21' 2 oimces) for the left. They give the relation of the weight of both kidneys to the body-wciKlit ;is 1:255-344. In a Percheron mare weighing about 2000 pounds the right kidney weighed 4 pou
. The anatomy of the domestic animals. Veterinary anatomy. 558 THE I'RINARY ORGANS OF THE HORSE Chauveau gives as an average 750 grams for the right kidney and 710 grams for the left. EUenberger and Baum (24 cases) give the right kidney as varying between 430 and 840 grams; and the left between 425 and 780; this is an average of 635 grams (about 22}'2 ounces) for the right kidney, and grams (about 21' 2 oimces) for the left. They give the relation of the weight of both kidneys to the body-wciKlit ;is 1:255-344. In a Percheron mare weighing about 2000 pounds the right kidney weighed 4 pounds 3 ounces, and the left one 4 pounds. In a horse of medium size the right kidney is about inches (ca. 15 cm.) in length, about the same in width, and about two inches (ca. 5 cm.) thick. The left kidney is about seven inches (ca. IS em.) long, four to five inches (ca. 10 to 12 cm.) wide, and two to two and a half inches (ca. 5 to 6 cm.) thick. Structure.—The surface of the kidney is covered by a thin but strong fibrous capsule (Tunica fibrosa), which is in general easily stripped off the healthy kidney; it is continued into the renal sinus, where it is attached. Sections through the kidney show it to consist of an external cortical substance and an internal meduUarj^ substance. The cortical substance (Substantia corticalis) is red bro^vn in color and has a granular appearance. It is dotted over with minute dark points; these are the renal corpuscles (Corpuscula renis),' each consisting of the dilated origin of a uriniferous tubide (Capsula glomeruli), with an invaginated tuft of capillaries (Glomerulus) enclosed by it. The medullary substance (Substantia metluUaris). Renal crest Pelvis Renal Branches Ureter vein of renal artery Fig. 409.—Transverse Section of Right ICiDNEr of Horse Passing Through the Hilus. Posterior portion of organ hardened in sUu. Note curvature of dorsal surface. is more resistant and presents a distinct radial striation. Its central part is pal
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