8i 
ELECTRIC DISCHARGE WITH THE CHLORIDE OE SILVER BATTERY. 
Tlie ratios of the sides of the parallelogram between the assymptotes of these 
hyperbolas differ somewhat, but not much, from each other, thus—calling CV the 
transverse axis, CB the conjugate axis. 
For air . 
„ hydrogen 
„ carbonic acid 
CV=28'16 
CB =29-18 
CV=25'5S' 
= 0-9665 
CB = 2513 
CV= 386 
CB=3611 
= 1-017 > Mean 1-0175. 
= 1-069 
Measurements of the hyperbolic curve gave the results shown in the following 
tables. The greatest discordances between the numbers derived from the mean 
experimental curves and those from the hyperbolic curves are in the lowest pressures 
up to about 19 man., 25,000 M ; the potential necessary for a discharge to take place 
being less than that required by the law of the hyperbola. 
Numbers obtained from curves. 
Air. 
Hydrogen. 
Carbonic acid. 
Pressure. 
Hyperbolic 
curve. 
Experimental 
curve. 
Hyperbolic 
curve. 
Experimental 
curve. 
Hyperbolic 
curve. 
Experimental 
curve. 
M. 
cells. 
cells. 
cells. 
cells. 
cells. 
cells. 
5000 
391-5 
250 
355 
250 
413-5 
275 
15,000 
690 
575 
626-5 
525 
722-5 
625 
25,000 
905-5 
825 
823-5 
750 
949 
850 
50,000 
1332 
1275 
1215-5 
1200 
1381 
1300 
75,000 
1692 
1625 
1549 
1575 
1739-5 
1700 
100,000 
2021 
2000 
1854 
1925 
2062-5 
2025 
150,000 
2632-5 
2650 
2425 
2525 
2652-5 
2650 
200,000 
3211 
3250 
2967-5 
3075 
3202-5 
3200 
250,000 
3771-5 
3825 
3495-5 
3625 
3730 
3725 
300,000 
4321-5 
4400 
4014 
4150 
4244 
4250 
400,000 
5402 
5475 
5035 
5175 
5246 
5275 
500,000 
6467’5 
6550 
6043 
6125 
6226 5 
6275 
600,000 
7523 
7600 
7044-5 
7100 
7195 
7225 
700,000 
8575-5 
8625 
8041 
8050 
8156-5 
8200 
800,000 
9623-5 
9625 
9035 
9000 
9112 
9150 
900,000 
10,670 
10,600 
10,026-5 
9975 
10,064-5 
10,100 
1,000,000 
11,712 
11,600 
11,017 
10,925 
11,013-5 
11,100 
The striking distances at atmospheric pressure and various potentials for spherical 
surfaces 3 inches radius and 1"5 inch diameter, as given in page 68, curve VIII., and 
at page 118, also those for nearly flat surfaces in pages 73 and 118, Part I., were reduced 
to millimetres distance and plotted down in the same way, but not on precisely the 
same scale, as the preceding curves for constant distance and various pressures. 
Hyperbolic curves were also found which intersected the experimental curves in two 
points. A reduction of the original diagram is given in fig. 78. 
It will be seen that in the case of spherical surfaces, the result having been obtained 
MDCCCLXXX. M 
