650 
Length of 
Spark in Deflection. 
Centimetres. N. | 
s. 

on 
390 
380 
350 
Bore 
347 
Silie 
313 
316 
288 
288 
290 
PABST 
260 
265 
255 
245 
255 
233 
240 
235 
215 
2A, 
215 
e 186 
1 aU) 
or 
~t 
ae a Oe ne Oe ee eee 
TasLeE VI.—Distance Curve, 17th July 1877. Electrodes, large discs. 
Equation V = {66°69 —3°7142s ,/ {s’+ -2s\. 

Length of 
Spark in Deflection. 
Centimetres. Ne 
S. 
lant) | oteats 
Oe” Ul deo 
a1 S| 466 
26a 
oa { 44] 
, 443 
Ki ANG 
oe ag ae 
: 400 
au | 398 
et, Kano 
eam | ihe 

ALEXANDER MACFARLANE ON THE 
TABLE V.—continued. 

, Ob ad ; Mean Diff. 
Tiere Dif of Mean of Potential 
; ; Diff. of in absolute 
ms Potential. Potential. measure. 
wn. v1 
510 133 
512 122 \ 134 26°27 
515 157) 
522 172 
503 166 ; 167 32°74 
510 163 
512 199 
512 Tare) \ 199°3 39°08 
516 200 
520 232 
523 235 \ 234 45°88 
525 235 
527 270 
530 270 \ 269°3 52°81 
533 268 
540 285 
545 300 x \ 296°5 58:14 
548 293 x 
552 319 
557 317 | 323 63°34 
568 333 
573 358. | 
578 366 363 TAS 
580 365 
_ 394 394 77:26 
Pressure, 737 mm. 



Observed Mean Diff, 
Zero. Diff. of Mean of Potential 
a Potential. Diff. of in absolute 
r 1 Potential. measure. 
n—nN. VL 
508 29 
509 29 \ 29 8-24 
510 44 1 
: seep nase e 12:35 
% 69 1 ie 
s 67 e 68 19:31 
512 O7 " 
513 95 | 96 2727 
5 113} ) ne 
510 112 s 1125 31°95 
x 140 
& 136 iss 39:19 

Calculated 
Diff. of 

















| 
ive 
25°97 +0:30 
32°70 + 0-04 
39°33 _ 0-25 
45°34 | +004 
52°29 +0°52 
58°66 —0'52 
64°96 — 1°62 
71:20 — 0-02 
(est! ey 


ou 
Potential in | “Gao 
8°32 hee 
12:24 4011 
19:34 =o 
26:06 om 
32:59 _o64 | 
38°99 +0-20 | 

