DO Mr. A. A. Campbell Swinton. 



Table IV. 



Faraday cylinder fixed at 90. 



Readings taken with Reflector at different angles from 90 to 180 



Table V. 



Faraday cylinder fixed at 112-5. 



Readings taken with Reflector at different angles from 1 12*5 to 180 



Eeflector. 



112-5 



115 



120 



125 



130 



135 



140 



145 



150 



155 



160 



165 



170 



175 



180 



