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Download pdf The Welcome Guest Volume 37-75

Download pdf The Welcome Guest Volume 37-75

The Welcome Guest Volume 37-75 by Books Group
The Welcome Guest Volume 37-75
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Author: Books Group
Page Count: 1022 pages
Published Date: 06 Mar 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
ISBN: 9781130475081
File size: 17 Mb
Download Link: The Welcome Guest Volume 37-75
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1859 Excerpt: ...It is well known that starch is insoluble in water;--except at the boiling point, and any degree of heat above the ordinary temperature of tho body is fatal to the digestive process--now if insoluble, it certainly cannot be digested. It is here that the diastase of the saliva comes into play, converting the starch into sugar and transforming a perfectly insoluble body into one most easy of solution, and in tho fittest condition for supplying carbon and hydrogen for the production of fat. Nearly all that we know of the various phenomena of digestion was learned by a very curious accident. In the year 1825 a young Canadian, named Alexis St. Martin, who was in the employment of the American Fur Company, received, by the Bingle discharge of a musket, a series of wounds of so formidable a character as to excite our wonder that he should ever have survived their effects. Besides injuries to the lungs and diaphragm, the stomach was perforated, and as part of one of the ribs was at the same time carried away, a dear opening into the viscus was effected. Now poor Alexis happened to fall into the hands of a physician who at once saw to what profitable account the accident might be turned, and who, though he healed the wound, did so in sucha manner that he could at any time by merely depressing a fold of the coats of the stomaeh, which formed, as it were, a valve or door over the aperture, obtain a distinct view of all that was going on inside. In this way much has been learned. To set out with one important fact, it has been distinctly proved that the gastric juice is not poured out by the little tubes which secrete it, unless the lining membrane be irritated by the presence of food or other mechanical stimulus. It was also found that this fluid is only thrown into t...

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