Mr Whiddington, The Shadow Electroscojpe 115 



the conditions of this experiment, in which a well charged 2-volt 

 lead accumulator was used, there is very fair concordance between 

 the various readings. 



Leak observed from 400 volts to 200 volts. 



If now in the above-mentioned expression we assume the pre- 

 viously determined values of C^ and Cg, viz. 65-0 cm. and 7-2 cm. 

 respectively, the value of C^ comes out to 188-0 cm. leading to a 

 value for the specific inductive capacity of ebonite of 2-90. This 

 value is in as good agreement as is to be expected with the deter- 

 mination of Exp. 3. 



8—2 



