Atmospheric Air and Oxygen Gas hy Respiration. 
271 
Azote after the experiment, 
found by the tests 191.58 
contained in the lungs, 846 
200.04 
Oxygen before the experiment, 3178.50 
— — contained in the lungs, 22.56 
3201.06 
Oxygen after the experiment, 
Found by the tests, 3001.42 
Contained in the lungs, 132.54 
$*$ 3 ' 9 6: 
Total of oxygen before the experiment, 3201.06 
Total of oxygen after the experiment, 3133.96 
Difference ..67.10 
The deficiency noticed in the experiment was 67, supposing 
that the lungs were brought to the same state after as before 
the experiment ; but granting that this was not the case, and 
that at the close of the experiment the state of the lungs was 
141 -f- 67 = 208, still our approximation will come within 
four or five cubic inches, for the azote contained in the sixty- 
seven missing would be only about four cubic inches. We 
are aware that the temperature of the lungs being 97, while 
that of the gas was 53 0 , the 141 cubic inches would occupy a 
space equal to 154 cubic inches ; but this residual quantity must 
be greater or less according to the exertion made, and also, 
probably according to the state of the muscular fibre at the 
time. 
