136 



HENEY A. ROWLAND 

 1 



X--992T 1 = ; 



= 00000337. 



296800- 



The effect on the upper needle, X', was about Jg- of that on the 

 lower X. 



Second Series. Everything the same as before except the following. 

 & = 7-65, n'=-Q525. 



Hence for this case we have from equation (1), 



1 



315000- 



And from the electrification, 



T -QQ JT' 



- 



=00000317. 



= -00000349 . 



Third Series. Everything the same as in the first series, except 

 = 8-1, n' = -0521, D = 114. 



