394 Mr. A. A. Campbell S win ton. 



Table X. 

 Both Keflector and Cylinder moved, the latter at twice the angular 



rate of the former. 



Mean 



Keflector. Cylinder. deflection. 



100 20 25-875 



105 30 28-375 



110 40 29-375 



115 50 29-5 



120 60 29-75 



125 70 29-75 



130 80 30-25 



135 90 30-875 



HO 100 32-25 



145 110 36-75 



150 120 43-25 



155 130 52-125 



160 140 64-375 



165 150 79-125 



ceding experiment given in Table X, it will.be noted that as the 

 negative charge imparted to the reflector diminishes the maximum 

 charge conveyed by the reflected cathode rays increases, though the 

 rates of diminution and increase respectively are by no means equal. 



Mean 



deflection. 



55-5 

 52-75 

 51 

 45 

 37 

 26 



17-25 

 10 

 4 



+ 0-25 

 + 1-25 

 + 1-5 

 + 1-5 

 + 1-5 

 + 1-75 

 + 2-25 

 + 3 



