In proportion as the chyme reaches the duodenum through the pyloric orifice, the bile and the pancreatic juice mingle with it, as the gastric juice does in the stomach. They both aid in liquefying the chyme by the water which they contain, and by then: special action upon the substances of which it is composed: the pancreatic juice continues with even more activity than the saliva to transform the amylaceous matter into glycose. The bile assists the digestion of the animal matter by reducing the fatty bodies to an emulsion, and it appears also to act as an excitant to the function of the intestine; and lastly, a fluid secreted by the mucous membrane of the intestine, as the gastric juice is by the stomach, co-operates with the biliary and pancreatic secretions. Under the influence of these agents, of the fermentation induced by the pepsine and of the peristaltic movement, the chyme is liquefied during its advance through the smaller intestine, and is transformed into a white milky fluid—the chyle—which the chyliferous vessels draw from the surface of the mucous membrane, and carry to the thoracic duct, from whence it goes to be mixed with the blood.