FURNITURE, AND ITS USES. 199 



a sort of choice. If anything comes along 

 which is not proper to go into the system, or 

 not yet fit to make blood, it does not for some 

 time suffer it to pass ; though after the sub- 

 stance has repeated its efforts to pass a great 

 many times, it appears to yield, as if to im- 

 portunity. True chyme, made of good and 

 proper materials, it never refuses, but suffers it 

 to go through at once into the portion of the 

 intestines next to the stomach, called the duo- 

 denum. 



FORMATION OF CHYME. Here, in the duo- 

 denum, it becomes a still more perfect chyme, 

 and is gradually mixed with a bitter liquor, 

 called bile, coming through a small pipe from 

 the liver, and with a liquor reeembling saliva, 

 coming from the pancreas, or, as it is called, 

 sweet bread. Being mixed with these liquors, 

 some of it slowly passes along, and spreads 

 itself over nearly the whole internal surface of 

 the intestines. It is always in greatest abun- 

 dance, however, in the duodenum, and a few 

 feet of the intestines next to it. 



