131 



Influence of Inanition on Metabolism. 



January 11. Nevertheless, in order to obtain the true loss of body- weight, they 

 must be included in the total outgo. 



Balance of Intake and Output. 

 It has previously been explained that the amounts of nutrients and energy 

 of absorbed food are assumed, not determined as the differences between the 

 nutrients and energy of food and feces. The difficulties of striking balances 

 with data as meager as these are readily seen. Too great stress therefore should 

 not be laid upon the value of the results thus obtained. 



Table 91. Distribution of intake and outgo of water Metabolism experiment 



No. 72. 



1 Includes 51 grams of water assumed as being eliminated in feces. 



2 Takes account of water assumed for feces. 



(See p. 135.) 



Table 92. Balance of intake and output of nutrients, ash, and energy 

 Metabolism experiment No. 72 (Jan. 11-12, 1905). 



(a) 

 Computed 



from 



elements 



absorbed 



from 



food.i 



(6) 



Kata- 



bolized. 



(O 



Gain (+) 



or loss( ) 



to body. 



(d) 



Of 



absorbed 



food. 2 



(e) 

 Heat 

 produc- 

 tion plus 

 potential 

 energy 

 of urine. 



(f) 



Gain (+) 



or loss ( ) 



to body. 



Body protein grams 



Body fat do. . 



Body carbohydrates.do. . 



Ash do. . 



Energy calories 



1652 



1760 



1 Calculated on the basis of dry matter of food. 



2 Estimated. (See p. 133.) 



(See table 88.) 



-108 



Balance of water. As in experiment No. 70, the water balance has been 

 isolated from the others in order to simplify the tabular matter. This water 

 balance is given above in table 91, which also shows the different sources of the 

 water of outgo and the water resulting from the oxidation of organic hydrogen. 

 Special attention is called to column /, which shows an unusually small loss 

 of preformed water to the body. 



