Manchester Mt'iiioirs, Vol. xliv. (1900), No. 115. 19 



connected with the electrodes broke down, arcini^ takini^ 

 place between the needle of the instrument and the 

 quadrants. 



At 5,000 volts a very fine and steady flame was 

 obtained, the electrodes being separated by a distance of 

 about 38 mm. 



At 7,500 volts the electrodes were nearly 50 mm. 

 apart, a steady flame still burning. 



The voltage registered at the electrodes in all cases 

 depends upon the distance between the latter when the 

 discharge is passing. As the electrodes were drawn apart, 

 the drop in volts became less. The current also became 

 less. Thus, in one case, 4,700 volts were registered at the 

 alternator terminals. When the discharge was running, 

 the electrodes were 6 mm. apart. Only 100 volts were 

 indicated on the voltmeter connected to the electrodes. 

 xAs the latter, however, were separated, the voltage 

 gradually rose, until, when at a distance of 30 mm., I,I00 

 volts were registered, the current at the same time 

 decreasing from 0*3 to 0T5 ampere. 



This result is probably explained by the greater 

 choking-action exerted by the coils when the electrodes 

 are near together and the current passing is greater. 



