Fig. 7. 



r 



r 



^\ 



J 



High frequency loop, induction into adjacent circuit or loop, 

 with large lamp between terminals thereof. 



Fig. 8. 



Long sparks 



B 



§K>KJN™=s£§@> 



Diagram of vat with oil, immersed in which is the high frequency primary 

 of few turns with secondary of a layer of finer wire of relatively 30 to 40 times 

 the primary turns. Sparks obtained from prolongations of secondary outward 

 or discharge terminals, A, B. 



