of Edinburgh, Session 1879-80. 
Table II. — Small Globe and Plate. 
561 
Length 
of Spark. 
Charge 
on 
Globe. 
Connec- 
tions of 
Electro- 
meter. 
Deflec- 
tion. 
1 
Zero. 
Differ- 
ence. 
Mean. 
Ratio of 
Positive 
to Nega- 
tive. 
£ inch 
negative 
direct 
505 
367 
138 ) 
. 
500 
370 
130 1 
13471 
. 
505 
369 
136 ) 
reversed 
215 
342 
127 
J 
, 
219 
339 
120 J 
1247 y 
1 -91 
9 
218 
345 
127 ) 
j 
I 
, y 
positive 
99 
473 
347 
126 ) 
I 
475 
350 
125 \ 
1223 J 
y -92 
470 
354 
116 ) 
direct 
235 
345 
110 ) 
230 
345 
115 \ 
115-3 
228 
349 
121 ) 
| inch 
positive 
direct 
170 
340 
170 
165 
340 
175 \ 
173-31 
170 
343 
173 ) 
reversed 
550 
360 
190 ) 
1 
545 
365 
180 \ 
186-0 y 
1 -90 
>5 
9 9 
545 
357 
188 ) 
9 9 
negative 
9 9 
125 
313 
188 ) 
9 9 
99 
99 
119 
312 
193 \ 
191-7. 
-y— 
OO 
OO 
9 9 
9 9 
9 9 
118 
312 
194 ) 
| 
9 9 
9 9 
direct 
580 
368 
212 ) 
1 1 
9 9 
9 9 
590 
379 
211 \ 
211-7 
J 
9 9 
9 9 
99 
590 
378 
212 ) 
! 
| inch (1) 
99 
99 
610 
390 
220 ) 
9 9 
99 
613 
394 
219 \ 
220-71 
9 9 
9 9 
99 
613 
390 
223 \ 
9 9 
99 
reversed 
100 
335 
235 j 
9 9 
9 9 
9 9 
100 
333 
233 \ 
234-0 - 
1 1-01 
9 9 
9 9 
98 
332 
234 ) 
” (2) 
positive 
9 9 
580 
370 
210 ) 
9 9 
9 9 
9 9 
600 
370 
230 ( 
9 9 
9 9 
580 
365 
215 ( 
222 -5 J 
y -92 
9 9 
9 9 
600 
365 
235 ) 
9 9 
9 9 
direct 
115 
337 
222 ) 
99 
9 9 
99 
125 
338 
213 [ 
9 9 
9 9 
120 
333 
213 ) 
216-0 
J 
1 inch (3) 
9 9 
9 9 
105 
335 
230 ) 
9 9 
99 
99 
110 
330 
220 \ 
224-01 
99 
99 
9 9 
reversed 
105 
327 
222 } 
9 9 
605 
353 
252 ) 
9 9 
9 9 
99 
610 
365 
245 \ 
245-3 y 
1 -90 
99 
9 9 
605 
366 
239 ) 
1 
„ G) 
negative 
9 9 
65 
315 
250 ) 
| 
! 
99 
99 
65 
315 
250 \ 
247 -7 J 
i-i-ii 
9 9 
9 9 
9 9 
direct 
70 
313 
243 J 
9 9 
610 
380 
230 ) 
I 
99 
99 
9 9 
610 
392 
218 \ 
221-0 
) 
• 9 
9 9 
610 
395 
215 ) 
(1.) Brushy sparks giving an incomplete discharge and preceding the white 
spark first observed. (2.) No brushy sparks observed before the white spark. 
(3. ) Brushy sparks observed before the white spark. (4. ) Great number of 
brushy sparks before the white spark. 
3 z 
VOL. X. 
