. A text-book of comparative physiology for students and practitioners of comparative (veterinary) medicine . Pig. 225.—Alimentary canal of embryo while the rudimentary mid-gut is still in con-tinuity with yelk-sac (KQlliker, after Bischoff). A. View from before, a, pharyn-geal plates; b, pharynx; c, c, diverticula forming the lungs; d, stomach; /, diver-ticula of liver; g, membrane torn from yelk-sac; A, hind gut. B. Longitudinalsection, a, diverticulum of a lung; b, stomach; c, liver; d, yelk-sac. It is plain that if, in the digestive tract, foods are changedin solubility and actual chemical
. A text-book of comparative physiology for students and practitioners of comparative (veterinary) medicine . Pig. 225.—Alimentary canal of embryo while the rudimentary mid-gut is still in con-tinuity with yelk-sac (KQlliker, after Bischoff). A. View from before, a, pharyn-geal plates; b, pharynx; c, c, diverticula forming the lungs; d, stomach; /, diver-ticula of liver; g, membrane torn from yelk-sac; A, hind gut. B. Longitudinalsection, a, diverticulum of a lung; b, stomach; c, liver; d, yelk-sac. It is plain that if, in the digestive tract, foods are changedin solubility and actual chemical constitution, this must havebeen brought about by chemical agencies. That food is brokenup at the very commencement of the alimentary tract is amatter of common observation; and that there should be agradual movement of the food from one part of the canal toanother, where a different fluid is secreted, would be a matter of fact, mechanical and chemical forces play a DIGESTION OF FOOD. 279 large part in the actual preparation of the food for these lie, of course, the vital
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyo, bookyear1890
