NO. 23 



INFLUENCE OF ATMOSPHERE ON HEALTH 



59 



October 4, 1910. H. B. W. and R. A. R. in chamber. Subject, H. B. W. 

 Fans off and CO; absorbed. 



Average volume breathed, 6.5 liters per minute. 



Average volume breathed, 9.6 liters per minute. 



At 4.25, fans put on. 



Average volume breathed, 10.5 liters per minute. 



At 4.42, CO2 let out of bag and fans put on to thoroughly mix the 

 atmosphere in chamber. At 4.48, sample taken. Analysis : C0 2 4.75 per cent : 

 0-.. 17.4 per cent. 



