of Hydrogen Positive Rays. 561 



Let the number of the positive and neutral carriers that 

 pass this cross-section in unit time be n x and n 2 respectively. 

 Now, if the " moved intensity " is due to the neutral rays 



PL/.T?P 



only, the moved intensity I observed without a field should 

 be proportional to v> 2 e~ H , where /ju is the coefficient of 

 absorption and / the distance traversed from the cross-section 



