Absorption. 



189 



vein, while the fats are carried by the main lymph duct, or 

 thoracic duct. These two streams unite before reaching 

 the heart. The fats pass around the liver, instead of 

 through it as do the peptones and sugars. 



Fig. 84. Outline of Digestion and Absorption. 



Amount of Liquid Absorbed. It is estimated that there 

 is poured into the digestive tube daily one quart of saliva, 

 four or five quarts of gastric juice, one quart of bile, and 

 about a quart of pancreatic juice. If the food and drink 

 amounts to two quarts, there must be more than two gal- 

 lons of liquid absorbed from the digestive tube each day. 



