6o 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 60 



Average volume breathed, 29 liters per minute. 



Fans and CO? on. 



Average volume breathed 32.2 liters per minute. 



At 5.20, sample taken. Analysis : CO2 5.29 per cent ; O2 16.43 per cent. 



October 12, 1910. Series I. R. A. R. and H. B. W. in chamber. Subject. 

 R. A. R. Fans off and CO2 absorbed. 



Average volume breathed, 14 liters per minute. 



