162 



Influence of Inanition on Metabolism. 



Balance of Energy. 

 In table 113, the energy derived from the oxidation of body protein, fat, 

 and carbohydrates during the time of this experiment is shown. On the last 2 

 days the comparison with the heat production shows large discrepancies, 

 approximating 4 per cent. No satisfactory explanation for such discrepancies 

 has as yet appeared. 



Relations between Oxygen Consumption, Carbon Dioxide Elimination, and Heat 



Production. 



The oxygen and carbon dioxide thermal quotients and the respiratory 

 quotients obtained in this experiment are shown in table 114. 



Table 113. Comparison of energy derived from Tcataoolized tody material with 

 total heat production Metabolism experiment No. 74. 



Date. 



Energy derived from different sources. 



From body protein. 



(a) 

 Energy 



of 



protein 



katabo- 



lized. 



(b) 

 Poten- 

 tial 

 energy 



of 

 urine. 



(c) 



Net 

 energy 

 (a-b). 



(d) 



From 



body 



fat. 



(e) 



From 

 body 

 glyco- 

 gen. 



(/) 



Total 



(d+e+/). 



Total 

 heat 

 produc- 

 tion. 



Energy from 



body material 



greater ( + ) 



or less ( ) 



than output. 



(h) 



Amount 



cr-0). 



(i) 

 Pro- 

 portion 



(h + g). 



1905. 

 Feb. 2-3. 

 Feb. 3-4. 

 Feb. 4-5. 



Cals. 

 364 

 280 

 2-30 



Cals. 

 88 

 68 

 61 



Total, 3 days. 874 

 Av. per day.. 291 



217 



72 



Cals. 

 276 

 212 

 169 



Cals. 

 1319 

 1073 

 1185 



657 

 219 



3577 

 1192 



Cals. 

 1691 

 1585 

 1607 



Cals. 

 + 20 

 + 68 

 + 62 



Per ct. 

 + 1.2 

 + 4.3 

 + 3.9 



4883 

 1628 



+ 150 

 + 50 



+ 3.1 



EFFECT OF INGESTION OF FOOD. 



Diet. While the diet of the subject was very simple, it contained in addition 

 to the two articles used in experiment No. 72, a small quantity of apple and a 

 few graham crackers. The same amount of each article of food was consumed 

 each day. The use of modified milk was continued in this experiment. 



Feces. At 8.15 a. m., February 3, there were passed 61.4 grams of fresh 

 feces, of which 23 grams were separated as belonging to food eaten before the 

 fast began. The remainder, 38.4 grams, appeared more like " fasting feces " 

 than the feces found in any other experiment following a period of fast but were 

 not sufficiently colored with lampblack to warrant their acceptance as the result 

 of fasting metabolism. 31 When partially dried these feces gave 10.1 grams 

 of air-dry material. Subsequently two other portions, on February 4 and 5, 

 were passed which obviously belonged to the food period, and were put together 

 to form one sample, amounting to 67.9 grams. It was, however, considered 



31 For further discussion of fasting feces, see section on Feces, Part 3. 



