Practical hydropathy, including plans of baths and remarks on diet, clothing and habits of . Extremity of intestinal villus; seen at «, during absorption, and showingabsorbent cells and lacteal trunks, distended with chyle; b, during interval ofdigestion, showing the supposed peripheral network of lacteals. The annexed engrav-ing represents theblood-vessels of an in-testinal villus, with thecapillaries or minuteveins: the largerveins, one carrying nu-tritive or arterial bloodinto the mass, theother large vein carry-ing the exhaustedblood back for renewal. The following is from Dr. Carpe
Practical hydropathy, including plans of baths and remarks on diet, clothing and habits of . Extremity of intestinal villus; seen at «, during absorption, and showingabsorbent cells and lacteal trunks, distended with chyle; b, during interval ofdigestion, showing the supposed peripheral network of lacteals. The annexed engrav-ing represents theblood-vessels of an in-testinal villus, with thecapillaries or minuteveins: the largerveins, one carrying nu-tritive or arterial bloodinto the mass, theother large vein carry-ing the exhaustedblood back for renewal. The following is from Dr. Carpenter:— The duodenum receives not onlythe pancreatic, but also the biUary secretion; and from the constancy withwhich this fluid is poured into the upper part of the intestinal tube, or even intothe stomach itself, in all animals winch have any kind of hepatic apparatus, itseems a legitimate inference that this secretion is not purely excrementitious,. FUNCTIONS OF SECRETION. 331 but serves some important purpose in the digestive process. It is not easy,however, to state with precision what this purpose is. The results of many olthe experiments which have been made to determine it, are vitiated by the fact,that the pancreatic duct in most cases discharges itself into the intestinal tubeat the same point with the hepatic, and has thus been frequently involved inoperations performed upon it.—As the most important constituents of Bile, andthe agency of the Liver as an assimilating and depurating organ, will be moreappropriately considered elsewhere (chaps, iv. and ix.), we shall here limitoursefves to the consideration of what may be regarded as the best-establishedfacts in regard to the uses of the biliary secretion in the digestive process. When its action is tested out of the body, by mingling it with thedifferent constituents of food, it is found to exert no change upon starchy sub-stances whilst fresh; though, when in a state of
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