350 Dr. E. B. Rosa on the Specific Inductive 



Table I. — Air. 



V= Potentials. 



Deflexions. 



V 



Squares of jr^y 



Quotients of 

 Deflexions by 



{IX. 



Vioo/ 









1050 volts. 



2 02 cm. 



1-102 



1-83 cm. 



107-0 „ 



2-08 „ 



1145 



1-82 „ 



1325 „ 



315 „ 



1-755 



1-80 „ 



1182 „ 



253 „ 



1-397 



1-81 „ 





Mean for 100 v 



Dlts 



1-815 „ 





Table II. — Turpentine. 



V=Potentials. 



Deflexions. 



Squares of -tk^- 



Quotients. 



101-4 volts. 



4-48 cm. 



1-028 



4-36 cm. 



ii 



4-44 „ 



n 



432 „ 



• > 



445 „ 



ii 



433 „ 



101-5 volts. 



4*48 „ 



1-030 



435 „ 



ii 



4-47 „ 



n 



434 „ 



1012 volts. 



447 „ 



1-024 



4-36 „ 





Mean for 100 t 



olts 



434 „ 





4-34 

 1-815 



2*39 = specific inductive capacity of Turpentine. 



In the same way other liquids were treated, and the follow- 

 ing values of their specific inductive capacities obtained : — 



Water at 16°'5 C K = 70. 



Alcohol, about 93 per cent K = 30'9. 



Ether (with water and alcohol impurities) . K= 8*4. 



Turpentine K= 2'39. 



Petroleum Oil, 300° Test K= 2'04. 



Petroleum Oil, light illuminating . . . K= 1*97. 



The difference between the above value for alcohol and 

 that previously given for absolute alcohol (25*7) is readily 



