514 



PROCEEDINGS OF THE AMERICAN ACADEMY. 



would be placed on a tinfoil sheet, and then the other surface scraped 

 down somewhat, this process serving to press the paraffin into close 



Observations on March 25, 1908. 



TABLE XLV. 



" Pure Par. P " vs. Air. 



Volts. 



136 

 136 

 136 



131 



126 

 131 



Throw. 



2.30 



2.49 

 After 



4.29 



<< 



4.39 



<( 



4.38 

 « 



4.47 

 4.43 

 4.39 

 4.17 

 4.22 

 4.42 

 4.40 



Charging Time. 



0.0017 



it 



0.00007 



10 A. M. 



0.00007 



a 



0.0017 



0.00007 

 0.00005 



u 



0.0017 

 30 sees. 



M tl 



0.0017 

 0.00007 



Temp. 



(cold) 



25°.0 



25°.2 



contact with the tinfoil. Then another sheet of tinfoil would be placed 

 on top and pressed down smoothly by a small plate of soft rubber, and 

 the process continued as before. The paraffin sheets were 20.5 cms. by 

 31.0 cms., and a margin of about 1.5 cms. was left outside the tinfoil 

 sheets. About 18 or 20 dielectric sheets of paraffin sufficed to give a 



