NO. 23 INFLUENCE OF ATMOSPHERE ON HEALTH 



Series III. CO2 on and fans off. 



73 



Average volume breathed, 35 liters per minute. Average tidal air, 1,901.9 cc. 

 Pulse rate during 3d minute, 100 per minute; 5th minute, 92; Jth minute, 92. 

 Series IV. C(X> and fans on. 



Average volume breathed, 51 liters per minute. Average tidal air, [,828 cc. 



Pulse rate during 3d minute, 96 per minute; 5th minute, 94; 7th minute, 92. 

 Sample (No. 2) taken. Analysis: CO- 4.37 per cent; 2 18.07 P er cent. 



/miliary Q, 1911. Series I. H. B. \V. lifted weight 12 times per minute 

 for series of 5 minutes. C0 2 absorbed and fans on. 



Average volume breathed, 19 liters per minute. Average tidal air, 1,329.06 cc. 

 Pulse rate during 3d minute, 114 per minute; 5th minute, 100; 7th minute, 80. 

 Series II. CO^ absorbed and fans off. 



Average volume breathed, 19.6 liters per minute. Average tidal air, 1,382.x 



Ptdse rate during 3d minute, 118 per minute; 5th minute, 106; 7th minute. 



90. 



