506 SALIVA [en. xxxii. 



creatic juice (to bo considered later) continues the digestion of starch 

 in the intestine. 



Cannon has shown that salivary digestion continues in the 

 stomach for longer than one supposed. The food lying in the 

 fundus of the stomach undergoes amylolysis for at least two hours, 

 because the absence of peristalsis in this region until quite late 

 stages in digestion prevents admixture with gastric juice, especially 

 in the interior of the swallowed masses. These observations were, 

 however, made on animals in a quiescent horizontal position. It is 

 extremely doubtful if they can be applied to man in a vertical 

 position, especially if he is moving about (see more fully Stomach 

 movements in the chapter entitled the Mechanical Processes of 

 Digestion). 



