560 
Proceedings of the Royal Society 
RECORD OF OBSERVATIONS. 
IQth April 1880. 
Table I. — Point and Plate. 
Length 
of 
Dis- 
charge. 
Charge 
on 
Point. 
Connec- 
tions of 
Electro- 
meter. 
Deflec- 
tion. 
Zero. 
Differ- 
ence. 
Mean. 
Ratio of 
Positive to 
Negative. 
i inch 
positive 
direct 
279 
355 
76 ) 
282 
360 
78 V 
77*7' 
9 9 
>> 
99 
290 
369 
79 ) 
reversed 
425 
350 
75 ) 
423 
346 
77 
75*5 - 
"j 1-12 
99 
421 
347 
74 j 
negative 
9 9 
265 
335 
70 1 
,, 
264 
332 
68 \ 
69-3, 
J- 1-16 
99 
99 
9 9 
261 
331 
70 J 
99 
9 9 
direct 
423 
358 
65 1 
9 9 
9 9 
99 
427 
362 
65 L 
65-0 
J 
99 
99 
430 
365 
65 J 
1 inch 
negative 
direct 
453 
378 
75 ) 
9 9 
9 9 
99 
454 
377 
77 [ 
75-5^ 
99 
9 9 
457 
383 
74 ) 
9 9 
99 
reversed 
265 
342 
77 ) 
9 5 
99 
9 9 
265 
342 
77 i 
77-0 ► 
1-16 
9 9 
99 
9 9 
265 
342 
77 r 
9 9 
positive 
y> 
443 
353 
90 ) 
99 
9 9 
99 
440 
352 
88 J 
88-0 
- l-io 
99 
9 9 
99 
438 
352 
86 ) 
9 9 
99 
direct 
263 
344 
81 ) 
9 9 
9 9 
260 
349 
89 [ 
847 
9 9 
9 9 
99 
265 
349 
84 ) 
2 inches 
99 
9 9 
247 
351 
104 ) 
9 9 
99 
9 9 
253 
355 
102 [ 
102 *0 ^ 
99 
99 
255 
355 
100 ) 
9 9 
99 
reversed 
452 
350 
102 ) 
9 9 
9 9 
99 
453 
350 
103 V 
102-7 L 
' 1-10 
,, 
9 9 
448 
345 
103 ) 
1 
99 
negative 
9 9 
224 
322 
98 ) 
| 
1 
9 9 
9 9 
99 
227 
317 
90 [ 
92-7J 
- 1-05 
99 
9 9 
9 1 
227 
317 
90 ) 
9 9 
9 9 
direct 
460 
365 
95 ) 
99 
99 
99 
459 
359 
100 [ 
97-7 
j 
9 9 
9 9 
99 
460 
362 
98 ) 
