44. EXPERIMENTS AKD OBSERVATIOKS ON THE 



about i-sad of Before icfpiration, 100 parts contained of 



the nitrogen. ^^.^^^^ .... .22 



Nitrogen - - - - .7 8 



After refpiration, quantity diminiftied to 570 c. inches, 

 100 parts found to contain of 



Carbonic acid - - - .07 

 Oxigen - - - - .l-i 



Nitrogen - - - - .79 

 570 — 39.7+80=450.3. 



468 — 450.3 = 17.7 c. inches or quantity of nitrogen 

 abforbed. 



Experiment 11. June 18, 1803. 

 600 c. inches atmofpherical air were refpired, for four 

 minutes, at the temperature of 64^". 



Before refpiration, 100 parts contained of 



Oxigen - - - - .22 

 Nitrogen - - - - .78 

 After refpiration, quantity diminiflied to 570 c. inches, 

 100 parts found to confift of 



Carbonic acid ... .08 



Oxigen - - - - .12 



Nitrogen - - - - .80 



Quantity of nitrogen abforbed, therefore, =12 c. inches. 



Experiment 111. February II, 1804. 

 1000 c. inches atmofpherical air were refpired for the 

 fpace of 4i minutes, at the te'mperature of 57**. Barometei' 

 =28,78. 



Before refpiration, 100 parts contained 



Oxigen - - - - .22 

 Nitrogen - - - - .78 

 After refpiration, quantity diminiftied to 962 c. inches. 

 After refpiration, 100 parts contained 



Carbonic acid ... ,07f 

 Oxigen - - - - .13 



Nitrogen ... - .79|. 

 Quantity of nitrogen abforbed, therefore, =1 5. 1 c. inches. 

 ComparatWc re- Thefe different experiments, (which I have felefted from 

 marks on thefe among many others) agree in the general refuH, viz. that a 

 experiments and . ^ •' . • , r, ^ , ,• , 



thofeofDavy. portion ot nitrogen is abltrafled from the atmofpherical air, 



by the blood in its pafTage through the lungs, aUhough the 



amount 



