DISRUPTIVE DISCHARGE OF ELECTRICITY. 649 
TABLE IV.—-continued. 

Observed Mean Diff. Calculated 
Length of é : 
Spark in Deflection. Zero. Diff. of Pore f of Ee ore Be Difference. 
Centimetres. n. a Potential. ose CLOSING ESI Viv. 
1 Potential. measure. measure. 
Ss. M—nN, vi, Vv. 

7 29°63 29-02 +061 
86 32:25 32°34 — 0:09 

95 35°62 00'63 —0-01 


118 44-25 45-38 aE /518) 

138°3 51°87 51:80 +0:07 
366 520 154 1547 58°02 58:14 —012 
365 525 160 
357 528 171 
355 525 170 
350 . 175 
172 64°50 64:43 +0:07 
or 
foe Wa Ae Ne Ee ee ee eee 
ws 
— 
OU 
e 
iS 
oo 

| 
i 
sis | 106 [¢ 105 | 93s | 3890 | +048 
| 
: 





€332 510 178 
LO" | € 330 515 185 1793 67°25 70°66 —3 41 
Wee 340 | =a | 1s j | 

TaBLE V.—Distance Curve, 14th June 1877. Electrodes, large discs. Pressure, 
atmospheric. Temperature, 74° Fahrenheit. 
Equation, V = {67:925 —2-9303s} ./{s’+ 2s}. 


Mean Diff. Calculated 





Observed : : 
spark Se Deflection. Zero. Diff. of ee f en es Pere es Difference. 
eaperetzes. seb Bi povenie Potential. measure. abs. meas. Ve: 
i 480 510 30 ) 
05 480 Bs 30 30 5'88 7:58 —1:70 
l| 480 ; 30 | 
450 505 Bax ) } 
=f: 452 zs 53 55 10°78 iibeyal —0°93 
| 452 af 53 j 
415 # 90 ) 
2 415 a 90 90 17°65; 19°05 — 1:40 
| 415 . 90 i 



VOL. XXVIII. PART. II. SF 

