42 ELEMENTARY TREATISE ON STOCK FEEDS AND FEEDING 



special arrangement of parts, it is forced back into the oesophagus 

 and into the mouth for final preparation by the teeth and the 

 saliva. When swallowed a second time, the mouthful of food 

 passes into the third compartment and onto the fourth for final 

 stomachal digestion. The first three compartments prepare the 



Fig. 2. Stomach of the ox, seen on its right upper face, the abomasum being depressed. 



Arumen, left hemisphere; B rumen, right hemisphere; C termination of 



the oesophagus; D reticulum; E omasum; F abomasum after Fleming. 



food for the final digestion which takes place in the fourth com- 

 partment. 



6. Intestinal Digestion or chylification. This step has refer- 

 ence to the food in the small intestine being converted into chyle, 

 which is the nutritive materials, in liquid form, ready for ab- 

 sorption into the circulation. After reaching the small intestine, 

 the food materials are again acted upon by ferments which have 

 a somewhat similar action to those already spoken of in connec- 

 tion with the saliva and the gastric juice. These ferments are 

 chiefly from the pancreas, or "sweetbread," and are conveyed 

 to the intestine, as a part of the pancreatic juice, through the 

 pancreatic duct or tube. These ferments alluded to are : 



