ON THE STOMACH IN MAN AND THE ANTHROPOID APE. 47 



Fig. 40. This figure shows the muscular fibres of the anterior half of the stomach represented in fig. 

 35. The mucous membrane and the submucous coat have been removed from the interior. A striking 

 demonstration is obtained of the thickening of the circular fasciculi, through contraction, at the bottom of 

 the various indentations, and also of the strongly contracted oblique fibres. A beautiful view is also afforded 

 of the contracted pyloric sphincteric cylinder and ring. On referring to fig. 38, it will be seen that the 

 pyloric canal is almost closed by longitudinal folds of mucous membrane. The arrangement of the 

 longitudinal pyloric fibres with reference to the sphincteric ring is likewise exhibited. The arrows are 

 directed towards the incisura angularis and the sulcus intermedius respectively. 



