DIGESTION AND ABSORPTION. 109 



flesh is rapidly lost, and death ensues. Sometimes the 

 duct of the liver gets clogged. The yellow stream of bile 

 is dammed up, and forces itself into the blood-vessels, and 

 is carried all through the body. It colors the skin and 

 eyes yellow. This condition is called jaundice. 



The bile in the intestine mingles with the other diges- 

 tive juices, and with the food, and aids digestion in sev- 

 eral ways. 



34, The pancreas lies across the backbone, just behind 

 the stomach. It is only one-twentieth as large as the 

 liver. It is a mass of little tubes, in which the pancreatic 

 juice is forming during digestion. These little tubes 

 empty into one large tube, which runs through its whole 

 length, and finally discharges into the intestine, just as 

 the small drain-pipes in the houses of a town empty into 

 the large main in the street, and that, finally, into the 

 river. 



35, The pancreatic juice makes a mixture, called an 

 emulsion, of the fats, in which they can easily pass 

 through the walls of the canal. It also aids in dissolving 

 other parts of the food. 



36, The lining of the whole length of the small and 

 large intestines contains little pits similar to those which 

 are found in the stomach. A fluid called the intestinal 

 juice, which helps digestion, wells up out of them; but 

 the action of this fluid is not so important as that of the 

 gastric juice. 



37, Recapitulation. The digestive apparatus consists 

 of the alimentary canal, and certain glands connected 

 with it. 



