Rontgen Rays in different Oases. 



39 



Table. 



Air 



H, 



CO2 



CH3CO2CH; 

 C,H,C1 .... 



CCI4 



C^HsBr ... 

 CHJ 



Soft rays 



1-00 

 •01 

 1-57 

 4-95 

 18-0 

 67 

 72 

 145 



Hard rays 



1-00 

 •18 

 1^49 

 3^90 

 17-3 

 71 

 118 

 125 



Relative Ionization. 



