166 PERISSODACTYLA. 



stomach, to the left ; the colon is then continued down the left a little 

 way, and is bent back upon itself, going as far back as its origin, 

 becoming rather smaller at the first part of this turn : it is again 

 turned up upon itself nearer to the spine, where it now becomes a much 

 smaller intestine, passes up upon the back, adhering to the parts 

 behind; it, then, crosses the spine to the left, and becomes a loose 

 intestine, having a long or broad mesocolon, which allows the colon to 

 be thrown into convolutions. The large part of the colon has three 

 bands, the smaller only two : one is at the insertion of the mesentery. 



The liver is rather small for the size of the body j it is thin and 

 flat. There is no gall-bladder. 



The pancreas 2 has two branches ; one runs across the body towards 

 the spleen, having the transverse turn of the colon firmly adhering to 

 it; the other lies in the curve of the duodenum. The ducts from 

 each unite, and enter or unite with the hepatic duct, forming one 

 duct which enters the duodenum five or six inches from the pylorus. 

 There is a small duct which comes off from the other, or from that 

 portion of the pancreas that is attached to the hollow of the duodenum, 

 and communicates with the other, which enters the duodenum nearer 

 its fore-part than the large one, but about the same distance from the 

 pylorus. "Where these ducts enter there is a circular fold surrounding 

 them, with a projection in its centre by which one would conceive the 

 ducts entered, but they do not ; they enter immediately on the inside 

 of the circular fold above mentioned. 



The spleen is a long body, not so flat as in the horse ; it is attached 

 to the epiploon. This is attached, on its anterior edge, to the convex 

 arch of the stomach and a little to the duodenum, on the right ; thence 

 across the spine, posteriorly, to the pancreas, «fec, along with the colon, 

 but not to it ; so that this membrane appears only to cover the lower 

 and posterior part of the stomach ; for, when the stomach is distended, 

 it passes from the curvature to the back. 



The kidney is similar to that of the horse and ass. The two lateral 

 processes going from the swell of the ureter are rather shorter and 

 smaller than those of either horse or ass. There are some small arte- 

 ries coming from the surrounding parts, which enter the body of the 

 kidney on its exterior surface 2 . 



The capsulae renales are two oblong bodies, very much of the shape 

 and size of the shell-fish called mussel [Mytilus edulis]. They are 



i [Hunt. Prep. No. 822.] 



2 [The structure of the kidney of the zebra is shown in Hunt. Preps. Nos. 

 1215, 1216.] 



