On Respiration. 381 



passed through the lungs; but when the process is con- 

 tinued for a much longer time, it is probable that the ves- 

 sels recover tlieir tone, and are able to expel nearly the 

 whole of the volume admitted. 



The air expired in the present instance being examined 

 in the manner described in our last paper, we found that 

 100 parts from each of the gasometers contained the fol- 

 lowing proportions : 



No. 1. 10 carbonic acid 

 21 azote 

 i 69 oxygen 



No. 2. 



No. 3. 



No. 4. 



No. 5. 



No. 6 to 10 mixed 



100 



We shall first calculate the total quantity of azote existing 

 in the gas before the experiment, and afterwards estimate 



what 



