NO. 23 



INFLUENCE OF ATMOSPHERE ON HEALTH 



Series IV. CO? and fans on. 



Average volume breathed, 17.3 liters per minute. Increase, 111 per cent. 



Sample taken. Analysis: CO; 3.56 per cent; O? 17.02 per cent. 



November 2, 1910. Series I. Subject, H. B. W. Work done by lifting a 

 weight of 20 kilograms 1 meter from the ground by means of a rope attached 

 to it over a pulley. The weight was lifted up 6 times (once every 10 seconds) 

 per minute, for 10 minutes. Fans off and CO2 absorbed by tin containing soda 

 lime attached to inspiratory valve. 



Average volume breathed, 6 liters per minute. 

 Series II. CO? absorbed and fans on. 



Average volume breathed, 6 liters per minute. 



