TVylou Jones. 



Phil. Mag. Ser. 6, Vol. 36. PL VII. 



Fig. 7. — Oscillations with 



primary open. 



Fig. 8. — Oscillations with primary of magneto closed. 



Fig. 9. —Magneto discharge 

 showing pulsating arc. 



Fig. 10. — Magneto dischar, 

 showing multiple spark. 



