166 



Influence of Inanition on Metabolism. 



drates for each of the 3 days, but the differences are mostly in the second 

 decimal place. These variations may be noted in lines d and g of table 121 

 beyond. 



Amounts of ingredients of food absorbed and corresponding amounts of body 

 materials. A comparison of the amounts of food protein, fat, and carbo- 

 hydrates determined by proximate analyses with the computed amounts of body 

 protein, fat, and carbohydrates derived from the elementary analyses is shown 

 in table 118. It has previously been stated that the quantities of food were 

 the same each day. Since the feces for the experiment were divided equally 

 among the 3 days, the data for all 3 days are identical. 



Energy of material absorbed from food. The nutrients of the absorbed food 

 expressed in terms of body materials, yielded for each day the following 



Table 118. Amounts of ingredients of food absorbed and body materials derived 

 from them Metabolism experiment No. 74 (quantities per day). 



(a) 

 Food. 



(6) 

 Feces. 



(o) 



Absorbed 

 (a-b). 



(d) 



Body 



material. 1 



Protein grams . 



Fat .do. . . 



Carbohydrates do . . . 



Ash do. . . 



Energy calories. 



3y.28 



147.97 



137.39 



9.92 



2133 



2.64 

 2.61 

 3.31 

 1.98 

 65 



36.64 



145.36 



134.08 



7.94 



2068 



35.70 



133.85 



131.48 



7.94 



2030 



1 The amounts of water absorbed as calculated bv the formulae were as follows : Feb. 2, 

 1930.06 grams ; Feb. 3, 2349.24 grams, and Feb. 4, 2056.95 grams. 



amounts of energy: From protein, 202 calories; from fat, 1277 calories; and 

 from carbohydrates, 551 calories, a total of 2030 calories. 



Changes in body-weight compared with balance of income and outgo. The 

 comparison made in table 119 has been previously explained for similar tables. 

 When the multiplicity of weighings is taken into consideration, the balance 

 obtained in this experiment is extremely satisfactory. 



Balance of Intake and Output. 



In order to determine to what extent the food supplied the necessary material 

 for the metabolic activity during this experiment, the balance tables 120 and 

 121 were prepared. There was an increasing gain of water throughout the 

 experiment. The daily loss of protein decreased rapidly as the experiment 

 progressed. The body was nearly in equilibrium as regards fat, while there 

 was a marked storage of carbohydrates and ash on all days. The diet furnished 

 an average excess of 368 calories of energy. 



