ELECTRIC DISCHARGE WITH THE CHLORIDE OF SILVER BATTERY. 105 
42’8 microfarads were charged with 2160 cells, and gradually discharged by con- 
necting the opposite plates many times in succession through a platinum wire of 
0 - 002 inch diameter and 12 inches long, the wire being deflagrated by each discharge. 
Fig. 28. 
C 
The potential of the condenser was measured from time to time by the quadrant 
electrometer, and from these measurements the quantity passing at each discharge was 
deduced ; they were as follows : — 
Divisions. 
Deflection of electrometer when condenser was fully charged= 200 "i 5 0 g 
,, „ after condenser had been discharged 6times=150j 6 
„ „ „ „ 11 „ 110 $£=8-18 
„ „ „ „ 15 „ 80 V5°-=8’00 
„ „ „ „ 18 „ 55 -' T V-= 8-125 
Mean 8T6 
So that, on the average, each discharge took or 4 per cent., of the whole charge ; 
and this quantity, there is reason to believe, is quite as great as that which passed 
through the rabbit. 
Secondary Current induced by a Primary Current of High Potential . 
Our experience with the detector-coil already described, and other smaller coils, all 
of which gave very long sparks in relation to the current, under the conditions about 
mdccclxxviii. p 
