Metabolism Experiment No. 73. 



145 



Elimination of Watee-Vapob. 



The determination of water of respiration and perspiration was made in 

 2-hour periods. The data are given in table 96, page 143. During the progress 

 of the experiment the total amount of water-vapor residual inside the chamber 

 gradually grew less and as a result of the decreased relative humidity there 

 was a constant loss of water from articles in the chamber. The daily amounts 

 of this loss are recorded at the foot of the table. 



The total water of respiration and perspiration gradually diminished from 

 684.22 grams on the first day to 543.34 grams on the fifth day. 



Cutaneous excretion of nitrogenous material. The bath water used by this 

 subject after coming out of the calorimeter at the end of this series of experi- 

 ments, i. e., Nos. 73 and 74, contained 0.3822 gram of nitrogen, and the 

 water used in extracting his underclothes yielded 0.2659 gram, a total of 0.6481 

 gram, or 0.081 gram per day. 

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