ACTION OF THE INTESTINAL JUICE IN DIGESTION. 329 



to the saliva and the pancreatic juice. Intimately mingled 

 as it always is during digestion with the bile and the 

 pancreatic juice, as well as with various alimentary sub- 

 stances, the intestinal juice should be studied as it operates 

 upon the food, in connection with the other fluids found in 

 the small intestine ; the digestive action of all being most in- 

 timately associated. 



