NO. 27, INFLUENCE OF ATMOSPHERE ON HEALTH 6 1 



Series II. CO- absorbed and fans on. 



Average volume breathed, J.t, liters per minute. 



Series III. Breathing air of chamber. CO: equals 1.70 per cent. Fans off. 



Average volume breathed, 18.2 liters per minute. 



Series IV. Breathing air of chamber. Fans on. 



Average volume breathed, [3.8 liters per minute. 



