«00 CHANGES PRODUCED IN AIR BT RESPIRATION. 



cient time to remove the azote from the extremities of the 

 bronchia. 



We lastly made a mixture of all the gasometers, from 2 

 to 12 inclusive, and found that 100 parts contained 



1 2 carbonic acid, 

 6*5 azote, 

 81*5 oxigen, 



100. 



Calculation for Carbonic Acid. 



Carbonic acid 100 : 9 : : 250 : 22*50 Carbonic acid gas in No. 1. 22*50 

 calculated. 100 : 12*5 :: 186 : 21 ditto' No. 13. 21 



From 3362 total expired 



250 No. 1. 

 168 No. 13. 



Deduct 418 



Leaves the mixture 2944 of No. 2 to No. 12. 



100 : 12 : : 2944 : 353-28 C ^fl ^ ™ mhtme 353-28 



396-78 



The total quantity of carbonic acid gas emitted was there- 

 fore 396*78 cubic inches. 



Calculation for Azote. 



A rote calcula- 100 : 25 : : 250 : 62*50 Azote in No. 1. 62*50 



ttA ' 100:5*5:: 168 : 9*24 in No. 13. 9*24 



100 : 6*5 : : 2944 : 191*36 in mixt. 2 to 12. 191*36 



263-10 



The azote expired, beside what might be contained in 

 the lungs at the close of the experiment, was therefore 

 263-10 cubic inches. Here it is plain, that the operator, 

 at the beginning of this experiment, had not brought his 

 lungs to the same state as in the preceding; or that in con- 

 sequence of fatigue, and want of refreshment for several 



hours, 



