292 Influence of Inanition on Metabolism. 



A comparison of the computed and determiued amounts of protein shows 

 that considerable differences appear on individual days, ranging in nitrogen 

 metabolism experiment No. 1 from -j-13.29 grams on March 16-17 to 15.39 

 grams on March 29-30. The differences are less in the second experiment, 

 +7.38 to 5.93 grams. 



The average daily results for the different weeks show very much smaller 

 discrepancies. The grand average for experiment No. 1 shows about 2 grams 

 more per day by calculation than by actual determination, a difference of 

 approximately 2 per cent. 



The agreement in the two methods of obtaining the amounts of protein in the 

 second experiment is all that could be desired. The average amounts per day 

 show discrepancies for 2 weeks of the experiment of less than 1 per cent. 



The general uniformity observed in the calculated amounts of protein when 

 compared to the determined amounts is unfortunately not recognized so readily 

 in the energy determinations. The variations in experiment No. 1 in the 

 amounts of energy run from 557 calories on March 23-24 to -j-745 on 

 March 25-26. On the average the energy as calculated is less than that 

 actually determined by about 160 calories per day. It is to be borne in mind, 

 however, that the quantities of energy are, in general, very large averaging 

 about 4500 calories per day. Thus the average discrepancy is about 4 per cent. 

 It is interesting to note that in the majority of instances no uniformity 

 exists between the discrepancies appearing in the protein and the energy, 

 though on March 29-30 the large minus discrepancy (in terms of the amount 

 calculated) in the protein corresponds with a very large minus difference in 

 the energy. On March 16-17 also, when large discrepancies are found in both 

 protein and energy, both results in terms of the amount calculated are positive. 

 In the second experiment the agreement between the calculated and determined 

 amounts of protein and energy is very satisfactory. 



On the whole the agreement between the amounts calculated and those 

 determined is sufficiently close to indicate that there was no material error, 

 either in sampling or in analysis. 



Feces. The time of defecation, the weights of fresh feces, and air-dry 

 material 84 are recorded in table 179. 



The copious defecations are especially noticeable. For example, on March 

 19 there were 349.4 grams of fresh feces passed at 9 h 15 m a. m., and at 5 p. m. 

 of the same day 262.4 grams were excreted, i. e., 611.8 grams of feces were 

 passed within 8 hours. Indeed, the next morning at 8.30 there was a defecation 

 amounting to 312.4 grams. Within 24 hours, therefore, this subject excreted 

 924.2 grams of fresh feces. 



84 Dried in a water oven and allowed to stand in the laboratory for 36 hours 

 before weighing. 



