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. 
Zero. 
Differ- 
ence. 
Mean. 
Ratio of 
Positive 
to Nega- 
tive. 
£ inch 
negative 
direct 
505 
367 
138 ) 
500 
370 
130 } 
134-71 
505 
369 
136 ) 
reversed 
215 
342 
127 
219 
339 
120 \ 
124-7 y 
7 -91 
218 
345 
127 V 
positive 
99 
473 
347 
126 ) 
| 
475 
350 
125 [ 
122*3 J 
- -92 
470 
354 
116 ) 
direct 
235 
345 
110 ) 
230 
345 
115 } 
115-3 
J9 
228 
349 
121 ) 
\ inch 
positive 
direct 
i7o 
340 
170 ) 
165 
340 
175 } 
173-3^ 
179 
343 
173 ) 
... 
reversed 
550 
360 
190 
j 
>> 
545 
365 
180 t 
186-0 y\ 
A -90 
9 9 
99 
545 
357 
188 | 
9 9 
negative 
9 ? 
125 
313 
188 ) 
1 
[ 
9 9 
99 
9 9 
119 
312 
193 V 
191 *7 J 
— i— 
ob 
oo 
9 9 
9 9 
direct 
118 
312 
194 ) 
l 
9 9 
580 
36,8 
21.2 ) 
1 
99 
9 9 
590 
379 
211 } 
211-7 
j 
| inch (1) 
9 9 
19 
590 
378 
212 ) 
9 9 
99 
61,0 
390 
220 ) 
9 9 
9 9 
613 
394 
219 \ 
220 -7 d 
9 9 
9 9 
99 
reversed 
613 
390 
223 ) 
99 
100 
335 
235 ) 
j 
99 
9 9 
9 9 
100 
333 
233 \ 
234-0 } 
d i-oi 
9 9 
1 9 
98" 
332 
234 ) 
„ ( 2 ) 
positive 
19 
580 
370 
210 ) 
9 9 
99 
19 * 
600 
370 
230 ( 
9 9 
9 9 
9 9 
580 
365 
215 ( 
222*5. 
y -92 
9 9 
9 9 
9 9 
direct 
600 
365 
235 ) 
99 
9 9 
115 
337 
222 ) 
99 
9 9 
1 1 
125 
338 
213 \ 
9 9 
1 9 
120 
333 
213 ) 
216-0 
1 inch (3) 
1 ,, 
9 7 
105 
335 
230 ) 
9 9 
9 9 
110 
330 
220 \ 
224-07 
99 
3 9 
9 9 
reversed 
105 
327 
222 ) 
, 
9 9 
605 
353 
252 ) 
99 
9 9 
99 
610 
365 
245 } 
245'3 - 
7 -90 
9 9 
f 9 
605 
366 
239 J 
”, <*) 
i negative 
9 9 
65 
315 
250 ) 
99 
99 
1 1 
65 
315 
250 [ 
247-7. 
' I'll 
99 
9 9 
9 9 
direct 
70 
313 
243 ) 
99 
9 9 
610 
. 380 
230 ) 
9 9 
7 ? 
610 
392 
218 \ 
221-0 
J 
99 
99 
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. 
