DISRUPTIVE DISCHARGE OF ELECTRICITY. 
565 
TABLE I1.—Discharge of Electricity through Olive Owl.—-29th May 1879. 
Electrodes, Parallel Brass Plates, each four inches in diameter. 
Dielectric. 
Air, 
Olive Oil, 
Length of 
Spark, 
Sh 
a 
a on we 
Deflection, 
N. 
410 
415 
390 
410 
470 
465 
405 
395 
335 
310 
250 
250* 
150 
180 
about 0 
Zero, 
n', 
525 
528 
530 
550 
570 
600 
560 
610 
Observed 
Mean 
Difference of Difference of 
Potentials, 
nn. 
| 
Potentials. 
1S 
61:5 
150 
237°5 
330 
420 
Mean 
Difference of 
Potentials in 
C. G.S. Units. 
39°7 
20°4 
49°6 
78-4 
109 
139 
No Jars on the Holtz Machine. 
Electric 
Strength. 
1:0 
3°5 
* Electricity escaped from the insulated wire before the discharge took place, 
VOL, XXIX. PART II. 
