31)8 Prof. J. J. Thomson and Mr. Rutherford on the Passage 

 is infinite, we may write the equation in the form 



i-*=ojp, (±) 



where p _ od s 



and is independent of both E and i. 



We have observed the relation between the current and 

 the electromotive force for several gases, and for different 

 intensities of the Rontgen rays. The comparison of the re- 

 sults of these experiments with equation (4) is given in the 

 following tables : — 



Leakage through Chlorine Gas. 



Electromotive 



Current 



Curr 



ent calculated 



Force. 



observed. 



by 



equation 4. 



*9 



65 







18 



124 





116 



35 



200 





180 



*70 



245 







140 



270 





275 



The observations marked with the asterisk were used to 

 calculate the constants. 





Leakage through Air. 





*9 



22 





18 



39 



38 



35 

 *70 



67 

 83 



67 



140 



90 



86 



The observations marked with the asterisk were used to 

 calculate the value of the constants in equation 4. 



Leakage through Hydrogen. 



5 18 19 



*9 31 



18 53 48 



35 63 58 



*70 65 



The observations marked with the asterisks were used to 

 calculate the constants in equation 4. 



