Action of Carbonic Acid 



915 



since the beginning of the experiment; on the vertical axis, the 

 percentage of the gases contained in the bag. 



We see very clearly that the consumption of oxygen and the 

 production of carbonic acid are not proportional to the time elapsed. 



Fig. 75 — Death by carbonic acid; changes in the air of the bag. 

 DCXV.) 



(Exp. 



The longer the experiment lasts, the more the value of these 

 phenomena diminishes. The intersection of the graphs with the 

 coordinate lines shows that there were, in percentages: 



In the 1st hour 15.8 of oxygen consumed, and 15.5 of C0 2 excreted 

 In the 2nd hour 14.5 of oxygen consumed, and 14.2 of C0 2 excreted 

 In the 3rd hour 9.2 of oxygen consumed, and 7.6 of C0 2 excreted 

 In the 4th hour 4.5 of oxygen consumed, and 4.0 of C0 2 excreted 

 In the 5th hour 4.0 of oxygen consumed, and 2.7 of C0 2 excreted 



