PAPERS OX CHEMISTRY AND PHYSICS 



127 



may at times have been operative in nature, and might, 

 if suitable material were available and if proper condi- 

 tions of temperature, concentration of solution and state 

 of subdivision were worked out, be of importance practic- 

 ally. 



Carbon D iC M ide — SoluT^ns 



Loopr.thrnlc 5c- e 



Till 



free C0 Z c 



