444 



ANATOMY OF VERTEBRATES. 



marked in the contracted stomach of the Dog. Microscopic in- 

 vestigation of the gastro-mucous coat has shown the tubules to 

 be more commonly subdivided at their blind ends than in Man. 

 In fig. 349, A is a tubule from the cardiac half, and B one from 

 the pyloric portion, of a Dog's stomach : «, b the columnar epithe- 

 349 thelium ; c the sub-sacculate 



branches of the pyloric tubules. 

 The intestinal mucous mem- 

 brane is finely villous. Fig. 

 350 shows a magnified view of 



350 



Gastric tubules, Dog's stomach, niagn. CO diam. 



CXLV1II". 



Villus of the ileum of a Dog, mngn. 40 

 diam. cxlviu". 



one of the villi, b, from which the columnar epithelium, a, c, is 

 partly detached : d, e, are columnar cells, more magnified, showing 

 the nucleus. Some of the Civet tribe have a stomach of a fuller 



form. In the Suricate (/?y- 

 zcena tetradactyla) the oeso- 

 phagus, fig. 351, a, runs half 

 an inch into the abdomen 

 before ending in the stomach, 

 about half an inch from the 

 left end, ib, b. The epithelial 

 lining of the gullet terminates 

 abruptly, as in all Carnivora, 

 at the cardiac orifice. The 

 stomach is of a full oval 



Stomach, duodenum, and paucreas, Suricate i nat. size shape, maintaining IllUcll 



