FEEDING 



289 



Figure 168. Diagrammatic sketch of the division of the stomach on the basis of the structure 

 of its lining {and particularly of the presence of certain glands) in a dog, a man, a mouse, a 

 guereza, a cow, a Fin Whale, a Bottlenose Dolphin, and a Beaked Whale. S = region of 

 stratified squamous epithelium ; F = region of fundus glands ; P = region of pyloric glands; 

 R = rumen (paunch); Re = reticulum {honeycomb bag); Ps = psalterium {manyplies) ; 

 Rs = rennet-stoniach ; Fo = forestomach ; Ai = main stomach; Py = Pyloric stomach. 



{Slijper, 1946.) 



could easily dispense with the first compartment altogether, since soft 

 food, however large, can be broken down fairly easily by the acid in the 

 stomach - hence the absence of this compartment in all Beaked Whales 

 (Fig. 168), whose pyloric stomach is indented to form up to twelve small 

 chambers instead. Sperm Whales and Pigmy Sperm Whales, whose teeth 

 are very much less reduced than those of Beaked Whales and which are 

 therefore less specialized animals, have the typical first compartment of 

 Odontocetes. 



The Cetacean intestine has few points of special interest. Gangetic 



