Metabolism Experiment No. 70. 



103 



whether they result from food eaten during the experiment. In this and subse- 

 quent food experiments, the weight of the feces passed during the experiment 

 was included in the outgo. Tn the fasting experiments, however, the feces 

 were neglected entirely in the outgo and their weight was deducted from the 

 loss of body-weight. (See explanation on page 120.) The apparent incon- 

 sistency between the methods followed in the fasting and food experiments 

 due to this procedure arises from the fact that it was hoped that more definite 

 information would be obtained as the experiments progressed regarding the 

 relation of the feces in the fasting experiments, and hence in the latter 

 experiments they were withheld from the computations. 



Table 62.- 



-Comparison of changes in body-weight ivith balance of income and 

 outgo Metabolism experiment No. 70. 



1 The data of this item should not be confounded with urine data in other tables, 

 planation, p. 66.) 



(See ex- 



Balance of Intake and Output. 



A consideration of the extent to which the food and drink supplied material 

 for the metabolic processes is possible by comparing the balance of intake 

 and output of the body. The intake and output are shown for convenience of 

 discussion and tabulation in two tables, No. 63, recording the intake and out- 

 put of water, and No. 64, that of protein, fat, carbohydrates, ash, and energy. 

 In the latter table the gains and losses of each compound are shown, as well 

 as the amounts absorbed and katabolized. 



Balance of water. As has been stated above, table 63 shows the distribution 

 of intake and output of water in the experiment under discussion. Although 

 food was eaten during this experiment, the table differs from previous ones 

 only in that column a includes water of feces as well as urine, and column e 



