88 



COMPARATIVE ZOOLOGY. 



pyloric. 



opening, leading into the intestines is called pyloric. In 

 the Carnivores, Apes, and most odd-toed quadrupeds, the 

 stomach resembles that of Man. That 

 of the toothless Ant-eater has the 

 lower part turned into a kind of giz- 

 zard for crushing its food. The Ele- 

 phant's is subdivided by numerous 

 folds. In the Horse, it is constricted 

 in the middle : and in the Rodents, 



PIG. 54. Stomach of the ' 



c, cardiac; p, Porpoises, and Kangaroos, the con- 



. r. 



striction is carried so far as to make 

 two or three sections. But animals that chew the cud 

 (Ruminants) have the most complex stomach. It is di- 

 vided into four peculiar chambers : First, the paunch 

 (rumen), the largest 

 of all, receives the 

 half -masticated food 

 when first syallowed. 

 The inner surface is 

 covered with papillae, 

 except in the Camel, 

 which has large cells 



for Storing Up Water. FIG. SS. Stotnnch of the Lion : c, cardiac orifice, or 

 From this, the food entrance of oesophagus ;;P ,pyloric. 



passes into the honey-comb stomach (reticulum), so named 

 from its structure. Liquids swallowed usually go directly 

 to this cavity, without passing through the paunch, and 



Fio. 86. Complex Stomach of a Riimin.-mt : a, gullet ; 6, rumen, or paunch ; c, reticn- 

 Inm ; rf, p*alterium, or mn ny plies; e, nboraasny; /, pylorus leading to duodenum. 



