CHANGES PRODUCED IN ATR BT RESPIRATION. \Qg 



No. 1 • • • -250 cubic inches. No. 8 • • • «296 cubic inches, 



2 290 9 256 



3... -272 10 256 



4-... 238 11 286 



5 252 12;-. -257 



6 300 13 168 



7 241 - 



3362 



The 13th gasometer was the whole of the last single and Examination 

 forcible expiration, portions were saved from each of the °f the expir«A 

 gasometers, and we first examined the state of No. 1. 



100 parts contained 9 carbonic acid, 

 25 azote, 

 66 oxigen, 



100 



iThe large quantity of azote in this case was a clear proof, 

 that our conjecture upou the residual gas in the lungs was 

 well founded. 



We then examined a mixture of No. 2 and 3. 



100 parts contained 10*5 carbonic acid, 

 10 azote, 

 79*5 oxigen, 



100 



Here the quantity of azote was diminishing, and the ratio of 

 carbonic acid increasing, so that it appears necessary for the 

 lungs to be cleared of azote, before the increased proportion 

 •f carbonic acid can take place. 



The 13th or last gasometer was now examined by itself; 



100 parts contained 12*5 carbonic acid, 

 5*5 azote, 

 82 oxigen* 



100 



Here the proportion of azote was only 3 per cent more than 

 what existed previously in the gas, and hence we may con* 

 elude, that even seven minutes and a half were not suffi- 

 cient 



