lOt CHANGES PRODUCED IT* ATH BY RESPIRATION 



riment contained 21 oxigen and 79 azote in 100 parts, mak- 

 ing the total quantity of oxigen 63 cubic inches, 



azote 237 



300 



The lungs ab- Now if the lungs be capable of fixing permanently any 

 sorb little if . d *u .. u •* u • / 



any azote, azote from the atmosphere, it appears by our experiments, 



that the quantity must be very minute, seeing that in the 

 1 1th, 12th, and 13th experiments, it did not disturb the pro- 

 portion of azote, as shown by the eudiometer; we shall 

 therefore in the present instance assume the volume of azote 

 after the experiment at 237 cubic inches, as before. 



But after the experiment, every 100 parts consisted of 

 86 parts azote, and 14 oxigen, either in the form of carbo- 

 nic acid, or free. 



86: 14: : 237: 38*53. 



Therefore the total quantity of oxigen left after the experi- 

 ment would have been 38*58 cubic inches. 



Then 237 azote -f- 38*58 oxigen =: 275'58; 



the quantity of gas after respiration would therefore have 

 been 275*58 cubic inches. 



300 — 275*58 = the loss of oxigen, or 24*42 cubic inches. 

 Oxigen ab- It appears, therefore, that 24*42 cubic inches of oxigen had 



r«prrat?on. ing been absorbed b y the s y s *em under the circumstances of 

 this experiment, 

 t Reviewing the 14th experiment, it appears, that the ga» 

 after respiration contained 85 per cent azote, and 15 per 

 cent oxigen, either in the state of carbonic acid, or free. 



State of the State of the Air be/ore the Experiment, 



air in exp. 14. 



300 — 237 azote -f 63 oxigen. 



After the Experiment, 



85:15::237:41'82. 



The total quantity of oxigen after the experiment appear* 

 to be 41*82 cubic inches. 



Then 237 azote -f 4182 oxigen = 278*82. 



The 



