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. 1916 Excerpt: ...fatty acids, valerianic and caproic. Weinland believes that the process takes place according to the formula: --4C6HU08 = 9C02 + 3C5H10O2 + gli2 but the hydrogen stipulated has never been observed. Lesser 1909-10 has found that analogous processes take place in the earth-worm (Lumbricus) when that animal is deprived of ...
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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. 1916 Excerpt: ...fatty acids, valerianic and caproic. Weinland believes that the process takes place according to the formula: --4C6HU08 = 9C02 + 3C5H10O2 + gli2 but the hydrogen stipulated has never been observed. Lesser 1909-10 has found that analogous processes take place in the earth-worm (Lumbricus) when that animal is deprived of oxygen. Carbon dioxide and fatty acids are produced. When air is administered to earth-worms after an anoxybiotic period an abnormally high oxygen intake is observed with a very low respiratory quotient 1910, 3. The products of the incomplete breakdown are rapidly oxidized. Experiments on anoxybiosis have been made further by Putter on infusoria 1905 and on the leech Hirudd) 1906-7, but a detailed account seems unnecessary as the methods employed are unreliable and the conclusions arrived at unwarranted, as shown by Lesser. On the tissues of chrysalides of flies (Calliphord), which were ground to a paste, Weinland 1906 has observed that a catabolism of fat could take place in the absence of oxygen, resulting in the formation of carbon dioxide and free hydrogen. Putter 1905 has expressed the opinion that the anoxybiotic metabolism is to be considered as the more general or "primitive" scheme of animal metabolism and the oxidative process as the secondary. This singular proposition probably contains an element of truth, in so far as the initial stage in the breakdown of the foodstuffs is probably not oxidative. Certain animals (endoparasitic worms) are capable only of performing this stage. They are able to excrete the products which are not harmful to them in the concentrations reached. They are absolutely anaerobic. Others (like earth-worms) are able to endure want of oxygen for a considerable time. The products of anoxybiosis are no...
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