18/2.] 



ANATOMY OF THE HIPPOPOTAMUS. 



189 



is collected in a great central reservoir, from which it can be injected 

 into the mouth of the young one while under water. 



We now come to the most remarkable viscus in the bodv — the 

 stomach. This has been described and figured by Daubenton, by 

 Gratiolet, and by Dr. Crisp ; but the figures are all so inaccurate as 

 to be nearly useless. I have therefore figured it again in its natural 

 position, after first hardening it in strong spirit. Fig. 3 represents 

 the anterior, fig. 4 the posterior aspect, of one fourth the natural 

 size, and fig. 5 of half the natural size, the interior of the divisions 

 marked A and B. The stomach has been variously described : as a 

 stomach shaped like a colon, with an appendix to the cardiac sac, 

 and a true paunch in front of the sac (Gratiolet) ; or, as a stomach 

 with three external and four internal divisions (Peters). It seems 

 to me better to describe it at once as a stomach with four divisions, 

 for the separation between the third and fourth portions is most 

 plainly indicated on its external surface, at least in the specimen I 

 am describing. I have distinguished the four divisions by the 

 letters A, B, C, D. 



The oesophagus enters immediately above the point of junction of 



Fig. 3. 



K 



..A 



Anterior aspect of the stomach of Hippopotamus, one-fourth natural size. 

 A, £, G, D. The four divisions in order. F. Partition in the interior of divi- 

 sion A. K. (Esophagus. 1. Duodenum. 



the divisions A and B. The arrangement of these parts will be 

 better understood by reference to fig. 5. A piece of the wall of the 

 cardiac end has been removed, as shown by the dotted line in fig. A ; 

 and the view is taken right along the central portion of the stomach^ 

 from left to right of the animal. The longitudinal folds of the lining 

 membrane of the oesophagus converge and meet upon the edge of a 



