gg COMPARATIVE ZOOLOGY. 



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 Kodents, 



Fio. 64. — Stomncti iir the . __ , 



Poipoieeic, cardiac open- Porpoises, and Aangaroos, tne con- 

 ing; p, pyloric opening, g^,,;^,^;^^ jg ^^^^.j^^ ^ f^r as to make 



twro or three sections. But animals that chew the cud 

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

 vided into four, peculiar chambers : Fii-st, the paunch 

 (rwrnew), the largest 

 of all, receives the 

 half- masticated food 

 when first swallowed. 

 The inner surface is 

 covered with papillae, 

 except in tlie Cauiel, 

 which has lai'ge cells 



for storing up water. Fio. 55.— Stomncli of the Lion: c,cnrdiac orifice, or 

 From this, the food entrance of <.soph>.g»s ;„, pyloric o-mce. 



passes into the honey-comb stomach {rdiculuni), so named 

 from its sti'ucture. Liquids swallowed usually go directly 

 to this cavity, without passing through the paunch, and 



Fio. B6.— Complex Stomach of a Rnminaut : a, gullet ; h, rnmen, or pannch ; c, reticn- 

 lura ; i, psnlterlnm, or manypUcB ; c, aboraasus ; /, pylorus leading to dtmdenum. 



