This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 edition. Excerpt: ...for these 10 days must have been in the nonprotein food materials, for these men had essentially the same protein intake. Indeed, the daily intake for the individual men is almost exactly the same save on October 1. This comparison of data presents an interesting physiological study, however, inasmuch ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 edition. Excerpt: ...for these 10 days must have been in the nonprotein food materials, for these men had essentially the same protein intake. Indeed, the daily intake for the individual men is almost exactly the same save on October 1. This comparison of data presents an interesting physiological study, however, inasmuch as we have here 12 men, each of whom took practically the same daily amount of nitrogen as the others for a period of approximately 10 days, and yet the nitrogen excretion varied somewhat widely for the corresponding days. Thus, on October 9 Pea and Tom, with essentially the same nitrogen intake, i. e., 12.21 and 12.05 grams, respectively, have a nitrogen output in the urine of 15.53 grams for Pea and 10.73 grams for Tom. The striking fall in the nitrogen intake for the whole squad on October 4, amounting to'over 60 grams, was accompanied by a fall of 16 grams in the total nitrogen in the output. On the whole the nitrogen output for the 12 days is reasonably constant, although the nitrogen intake was greatly decreased after the first 3 days for which we have a record of the food. Another point which should be brought out is the fact that the nitrogen of the intake was by no means definitely fixed each day, but depended somewhat upon the character of the food served generally to the men. Thus, we find a marked rise from an average of 9.33 grams on October 7 to 13.82 grams on October 8. This is a good illustration of the lack of positive control of nitrogen intake; in other words, the nitrogen intake was not predetermined. If we examine the nitrogen excretion in the 12 days from December 5 to December 18 (table 43) we note again rather striking irregularities, which are even greater than those noted for the October excretion, minimum figures...
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