NO. 2T, 



INFLUENCE OF ATMOSPHERE ON HEALTH 



79 



Pulse rate during ist minute, 102; 2d minute, 104; 3d minute, 98; 4U1 minute, 

 90; 5th minute, 95. 



CO2 let into chamber from a bag outside. Sample taken. Analysis CO2 

 4.4 per cent; O2 17.20 per cent. 



Average volume breathed, 43.4 liters per minute. 



Pulse rate during ist minute, 132; 2d minute, 122; 3d minute, 112; 4th min- 

 ute, 115; 5th minute, 115. 



Series III. Air in chamber cooled io° F. by means of water cooler. 



Average volume breathed, 59.4 liters per minute. 



Pulse rate during ist minute, 112; 2d minute, 106; 3d minute. 98; 4th min- 

 ute, 96 ; 5th minute, 98. 



Sample taken. Analysis : CO2 5.66 per cent ; O^ 16.61 per cent. 



The following- results summarize the effects of cooling the air : 

 CO2 absorbed and fans off 



CO 2 on and fans o1 



