Metabolism Experiment No. 73. 



147 



Elimination of Carbon Dioxide and Absorption of Oxygen. 



The quantities of carbon dioxide and oxygen residual in the chamber at 

 the end of each experimental period as well as the total amounts of carbon 

 dioxide exhaled and oxygen consumed by the subject are given in table 97, 

 page 144. Fluctuations are noted in the residual amounts of carbon dioxide 

 and oxygen as in the earlier experiments. 



The amount of carbon dioxide excreted was greatest on the first day and 

 diminished with considerable regularity to the end of the experiment. On the 

 other hand, the daily amounts of oxygen consumed remained nearly constant 

 for the first 2 days, after which there was a gradual diminution from day to 

 day. 



Table 99. Elements and materials katabolized in body Metabolism experiment 



No. 73. 



1 Glycogen gained. 



Elements Katabolized in the Body. 



The elements katabolized in the body, obtained by the methods previously 

 described, are given in table 98. The apparently excessive losses of total weight, 

 hydrogen, and oxygen are partly compensated by the large amounts of water 

 consumed. 



Elements and materials katabolized in the body. A summary of the losses 

 of the elements and the compounds computed therefrom by means of formulae 

 previously recorded is given in table 99. As in the preceding table, there is a 

 very large apparent loss of hydrogen, oxygen, and water. The loss in protein 

 averages 65 grams per day. 



In common with the other fasting experiments, there is a very large loss of 

 glycogen during the first 24 hours of the fast and lesser losses on the 3 days 

 following, but on the fifth day there is apparently a gain of 10.84 grams. The 

 probability of a gain of glycogen after 4 consecutive days of fasting demands 

 special consideration, but discussion of the point is deferred until later (Part 

 3, Materials Katabolized, Glycogen) in the report. 



