504 PROCEEDINGS OF THE AMERICAN ACADEMY. 



From these we get 



TABLE XXXVIII. (Figures 5 and 7.) 



Residual Charge in Percentage of Total Charge. 



March 12, 13, 1908. Temp. = 20°-22°. 



We see from these results that the layers of air in the condensers 

 "Par. KA ' ; and "Par. KB" apparently make little, if any, difference 

 in the amount of residual charge. 



□ 



O.l per cent, 

 of Free Charge 



"PAR.0" 



0.0006 



0.0010 0.0016 



TIME OF CHARGING. 



Figure 9. (Tables XLI and XLIII.) 



