RUMINANTIA STOMACH. 



367 



oa the left side, incliuing obliquely downwards from left to right, and 

 elongated from before backwards. The surface is smooth, and divided into 

 two lateral regions or hemispheres by slight grooves, which deepen towards 

 the extremities. The sides are smooth, thick, and rounded ; the extremities 

 are divided by a deep fissure into two lobes, the anterior being concealed. 

 These two fissures, continued by the grooves, divide the rumen into a right and 



Fi(i. 129. 

 Stomach of an Ox inflated— viewed from the right side. A, Rumen ; a. Left sac ; a', Its anterior 

 extremity ; a", Left conical sac ; b, Right sac ; b'. Its anterior extremity ; b", Right conical sac ; 

 c, Superior border of rumen ; d. Its inferior border ; e e, Longitudinal groove ; yr, ffisophagus ; 

 '/, Its dilated extremity entering rumen ; h, Spleen ; B, Reticulum ; i, Its greater curvature ; k, Its 

 I left extremity; I, Its right extremity; C, Psalterium ; m, Its greater curvature; n, Its lesser 

 'curvature; o, Its anterior extremity; p, Its posterior extremity; D, Abomasum ; q. Its greater 

 curvature ; r. Its lesser curvature ; s, Its anterior extremity ; t. Its posterior extremity ; u, Pylor- 

 us ; r, Duodenum. 



left sac, which is most manifest in the anterior. The right sac is the shortest, 

 being covered in the major part by the peritoneal omentum ; the left is pro- 

 longed beyond, and at either extremity curved on the right, receiving super- 

 jiorly the insertion of the oesophagus, and is also continuous anteriorly with 



