[wight] variations IN THE CONDUCTIVITY OF AIR 109 



Voltage on Cylinder 



TXj itl 



-hi-: 





^4°^ o 



^1 I ce 



-p-: 



-tïttirxt 



mmi-f,i^-i.^.i^.m.i mmmm w 



■~:fc-ii:i:;iu;:i;i;:tn:,l; ;li:rln::i;niJt|nt: 



lr^H4--T^-'F- 



D' Radium to Cylinder 

 FIG. 8 



/" 2" 



Depth or Radii. 



