296 



Scientific Proceedings, Royal Dublin Society. 



E is the voltage applied to the sample, and D the galvanometer deflection. 

 For the set of higher voltages the galvanometer was shunted with 196 ohms. 



►J 

 O 



> 



a 3 



Minutes. 

 Fig. 3. — Leakage Curves for Sample B. 



Thus, for a range of voltage from 40 to about 800 volts, the insulation 

 resistance of the sample at the given temperatures is approximately 

 independent of the voltage. 



