Cathode Rays and certain Chemical Effects. 223 



of coordinates ; and show a very fair proportionality between 

 </> and Op over the range considered. 



Fig-. 2. 



i 

 C;;.'0" 



30 











r 



so 







/ 



// 



/ 9^ 





2o 





/ 



// y 











/A 













Jv/ 









<o 





v/ / 









O 













To plot the variation of <J) with ray velocity the values 

 of <£ as they appear in Table I. have been reduced to a 

 common value of Op and entered in column 6 of the same 



table. 



4> 



In Table II. these values of -£ are collected and 



entered against the values of the corresponding ray velocities, 

 the mean for any one ray velocity being taken. 



Table II. 



1 



Cathode-ray 



velocity in 



terms of 



solenoid current. 



2 



Cathode-ray 



velocity, 

 cm.XlO -9 . 



3 



- X 10* 

 Op x • 



4"3 amps 



4-7 

 5-1 



60 



7-0 



2*92 

 320 

 3-47 

 3-74 

 4-08 

 4-42 

 476 



300 

 270 

 200 

 20-0 

 17-3 

 14-0 

 100 



