ELECTRIC DISCHARGE WITH THE CHLORIDE OE SILVER BATTERY. 71 
charged to any potential measurable by Sir William Thomson’s absolute or his portable 
electrometer, the opposite plates of the condenser being connected to two very slightly 
convex surfaces, which might be adjusted to any required distance from each other. 
For the readiness of comparison with our own results, we have reduced into volts 
(Table IV.) Sir William Thomson’s numbers, contained in his most recent communi- 
cation on the subject, and given in electro-static measurements, taking for v (the ratio 
of an electro-magnetic to an electro-static unit) the value of 3 X 10 10 , and for a volt 
the value 10 8 C.G.S. unit of potential. 
Table IV. 
Electro-static force 
Difference of po- 
EMF in volts 
= Difference of po- 
Inch. 
Centimetres. or EMF per 
tential of the 
electro-magnetic tential in volts 
centimetre. 
opposite surfaces. 
unitsdivided by 10 s . per centimetre. 
0-0034 
0-0086 
267-1 
2-30 
690 
80,230 
0-0050 
0-0127 
257-0 
3-26 
978 
77,000 
0-0060 
0-0152 
262-0 
3-33 
999 
78,660 
0-0075 
0-0190 
224-0 
4-26 
1278 
67,260 
0-0111 
0-0281 
200-6 
5"64 
1692 
60,220 
0-0161 
0-0408 
151-5 
6-18 
1854 
45,450 
0-0222 
0-0563 
144-1 
8-11 
2433 
43,210 
0-0230 
0-0584 
139-6 
8’15 
2445 
41,870 
0-0271 
0-0688 
140-8 
9-69 
2907 
42,250 
0-0356 
0-0904 
134-9 
12-20 
3660 
40,490 
0-0416 
0T056 
132-1 
13-95 
4185 
39,630 
0-0522 
0-1325 
131-0 
17-36 
5208 
39,310 
Table V. — 
Mean results obtained with the AgCl battery, 
1876. 
Feb. 24, .June 9th 
and 10th, Oct. 19th and 20th. 
Inch. 
Centimetres. 
EMF 
in AgCl cells. EMF in volts. 
Difference of potential 
in volts per centimetre. 
0-00497 
,0-01263 
1080 
1113 
88,060 
0-00575 
0-01461 
1200 
1236 
84,590 
0-01434 
0-03642 
2160 
2225 
61,090 
0-01738 
0-04414 
2400 
2472 
56,010 
0-02524 
0-06410 
3240 
3336 
52,050 
0-03000 
0-07619 
3600 
3708 
48,660 
0-03703 
0-09404 
4320 
4449 
47,320 
0-04388 
0-11440 
4800 
4943 
43,210 
0-04925 
0-12510 
5400 
5562 
44,460 
0 - 05650 
0-14350 
5880 
6056 
42,210 
0-06287 
0T5970 
6440 
6674 
41,780 
0-07025 
0-17840 
6960 
7168 
40,180 
0-07550 
0-19170 
7560 
7785 
40,160 
0-08275 
0-21010 
8040 
8281 
39,420 
