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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. 1919 Excerpt: ... the experiment--indicated a large loss in heatproduction during the progress of the fast. Realizing the desirability '9 Lusk, Journ. Biol. Chem., 1915. 20, p. 565, 4 Benedict, Carnegie Inst. Wash. Pub. No. 203, 1915. "Armsby, The Principles of Animal Nutrition, New York, 1906, 2d ed., p. 346. 1 of checking the results, a photographic method '2 of measuring surface area was developed and the values of heat-production per square meter of body-surface '3 were recomputed., The subject took no food and only about 900 c.c. of distilled water per day for 31 days." The heat-production during the night was measured directly with the bed-calorimeter for each of the 31 nights." As the fast progressed there was a very noticeable decrease in heatproduction from night to night. This would naturally be expected since weight decreased from about 60 kg. to about 47.5 kg. But the metabolism when computed on the basis of body-weight showed a decided loss as the fast progressed. There was also a loss in metabolism per square meter of body-surface. This is shown by the data in table 45, which gives the body-weight, the body-surface as computed by the Meeh formula" and from the measurements of the anatomical photographs, and the heat-production per square meter of body-surface per 24 hours as based upon the observations with the bed-calorimeter during the night. Disregarding the last food day prior to the fast, the heat-production per square meter per 24 hours as given in the last column of the table ranges from 927 calories on the third day to 664 calories on the twentyfirst day of the fast, representing a decrease of 28 per cent in the heatproduction per square meter of body-surface. Thereafter a distinct tendency for the heat-production to...
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