1872.J 



ANATOMY OP THE HIPPOPOTAMUS. 



Fig. 5. 



191 



height : the highest measures barely \", and the lowest jM'. This 

 portion has a nearly uniform diameter of 3". 



Internal view of the first and second divisions of the stomach of Hippopotamus 

 . half natural size. 



A, B First and second divisions, viewed from the left side. C. Interior of third 

 division. G. Partition between divisions A and C. F. Partition in the 

 interior of division A. E. Valve along the posterior side of the same. 



Between the divisions C and D there is a passage, the floor of 

 winch measures 2|" along its anterior edge, H" along its posterior, 

 and is 1" high in the centre. It is marked H on fig. 4, where its 

 course may be seen to extend over the commencement of the last 

 division. This is crossed by nine crescentic transverse bands alon°- 

 its anterior surface, as shown in fig. 3. One only, the third in de- 

 scending order, is of any extent ; it measures 3" from side to side 

 and 1 in depth at its deepest part. Six only of these are visible on 

 the exterior. The pyloric aperture is marked by an annular con- 

 striction |" in diameter. Immediately beyond the pylorus the in- 

 testine is much dilated for a distance of about 3" (fig. 4). 



A microscopic examination of the coats of the different stomachs 

 (kindly undertaken for me by my friend N. H. Martin, Esq., of 

 Christ s College) shows that the villi are of nearly the same shape 

 throughout the first three divisions, being short cylindrical pro- 

 jections, varying somewhat in size and distribution in the different 



