PAGE The Mention of a curious Sympathy, whereby SA Defcription of the PANCREAS, and of the Similarity of Of the INTESTINAL CANAL. 1. Its numerous Convolutions. 2. Its Plaits, and their Difpofition and 3. Its internal Surface, or VILLOUS COAT, 215 ib. which abforbs the Nourishment, and A Fact to prove that our Food, though it undergoes a great 216 217 SECT. IX. OF THE GASTRIC SOLVENT, AND THE RELATIVE DIGESTIBILITY OF FOOD. Since in the Stomach of Serpents and Fish, 218 In a Subject of fuch Importance we ought not to have ANALOGICAL REASONING, but DI PAGE 218 219 {His Grounds for fear, SPALLANZANI's firft Experiment. He fwallowed 52 grains of mafticated Bread' confined in a Linen Bag. The Bag was returned after 23 hours entire, but containing no BREAD, 2d. Experiment. In the fame Circumstances he put 60 Grains of boiled Veal, and when the Bag was returned, only a few Fibres were found, which were voID of SUCCULENCY, GALEN attributed the Digeftion of our Food to HEAT, ib. 220 ib. ib. Van Helmont referred this Phenomena to the SOUL, whofe feat he supposed in the Sto- 221 OTHERS attributed it to TRITURATION, and others again to FERMENTATION, BOERHAAVE united the two laft Suppofitions, He reafoned, 1ft. Anatomically, 2d. Analogically, ib. ib. ib. ib. { { - 221 His Remarks on graniverous Birds, who ufu- A curious Stru&ture at the Mouth of the Sto- A no less curious Mechanifm in the CRAW- SPALLANZANI's Experiment, which proves, that in Animals, where the Food is previously maf- ticated by the Teeth, the STOMACH has NO Comparative Experiments to prove the Necef- ib. ib. Ift. As adding more SALIVA to the Food. 2d. As affording a more extended Surface for the folvent Action of the GASTRIC An ingenious Contrivance made by SPALLAN- ZANI to obtain the GASTRIC FLUID, Having fucceeded in obtaining the Gafric Fluid, he attempts to produce ARTIFICIAL 1. In a Phial of WATER. 2. In a Phial of GASTRIC JUICE. ib. After feven Days, a flight Solution of the Meat appeared in both Phials; but in the 1ft. It had a PUTRID TAINT, and in 2d. IT WAS PERFECTLY FREE FROM PU- TRIDITY, This Experiment was made at a low Tempe- rature, whereas at the Temperature of 79 or 1ft Phial, after two Days, the SOLUTION was rather greater than in the 1ft Ex- periment, and the Fator was very 2d Phial, containing GASTRIC JUICE, there was not the smalleft Fætor, and Dr. STEVEN'S Experiments on the RELATIVE 224 VOL. II. 1ft. Experiment |