. The comparative anatomy of the domesticated animals. Veterinary anatomy. THE n\TESTL\ES. 411 begius at the cfecum, and terminates by suddenly contracting at the origin of the small colon. Length—Capacity.—It is from about 10 to 13 feet in length, and has a medium capacity equal to 18 gallons. Foi-m—General disposition.—Kemoved from the abdominal cavity, and extended on a table or on the ground, this portion of the intestine appears as a voluminous canal, offering a succession of dilatations and contractions; its surface being traversed by longitudinal bands, and sacculated and furrowed trans
. The comparative anatomy of the domesticated animals. Veterinary anatomy. THE n\TESTL\ES. 411 begius at the cfecum, and terminates by suddenly contracting at the origin of the small colon. Length—Capacity.—It is from about 10 to 13 feet in length, and has a medium capacity equal to 18 gallons. Foi-m—General disposition.—Kemoved from the abdominal cavity, and extended on a table or on the ground, this portion of the intestine appears as a voluminous canal, offering a succession of dilatations and contractions; its surface being traversed by longitudinal bands, and sacculated and furrowed transversely for a gi'cat i)art of its extent, exactly like the cfecum. It is also doubled in such a manner as to form a loop, whose two branches are of equal length and are held together by the peritoneum, which is carried from one to the other; so that the terminal extremity of the large colon returns towards the point of its origin. But this colic flexure, owing to its length, could not be contained in the abdomen ; and it is therefore doubled in its turn from above to below and from right to left (at the points f, f, in Fig. 20 ) ^ and forms curvatures wlfich will be noticed prt- s- - • sently. From this circumstance, it hapjiens that the large colon, studied in the abdominal cavity, is divided into four portions lying beside each other in pairs ; so that a transverse section of that cavity, made in front of the base of the cfecum, would give for this intestine the results indicated in the annexed figure. Course and Relations.—In following the course of the large colon from its origin to its termina- tion, in order to studv its four portions in their ' , 1 ,. ,1 i- n • • 1- 1 PLAN OF THE COLON. normal relations, the tollowmg is observed: Commencing from the arch of the caecum, the colon is directed forwards, above the middle portion of that reservoir, which it follows to its point. Arrived at the posterior face of the diaphragm at its most declivitous part, it be
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