ELECTRIC DISCHARGE WITH THE CHLORIDE OF SILVER BATTERY. 
83 
8040 CELLS. 
Date. 
Form of terminals. 
Distance 
between terminals. 
1877. May 24. Conical point of 20° -f and a plate 15 in. diam. — '267 
Ratio of the striking distance with a conical and with a paraboloidal point — 
267 
343 
= 0-7784. 
On Plate 8 we have laid down in curves the observations made on different occasions 
with a paraboloidal point and a disc from I'l. inch to 1'5 inch in diameter, the point 
being uppermost, and made positive or negative ; each particular case is distinguished 
in Table X. by the letters P and n, which always refer to the point, and denote that 
the spark was longest when so charged. Special experiments have shown that it 
makes no difference in the length of spark whether the point or disc is uppermost. 
Table X., showing the lengths of spark in the curves of Plate 8. 
Curve. 
1080 cells. 
2160 cells. 
3240 cells. 4320 cells. 5400 cells. 6480 cells. 7560 cells. 8040 cells. 
inch. 
inch. 
inch. inch. inch. inch. 
inch. inch. 
XIII. 
0-0055 N 
0-0207 N 
0 0734 N 0-1127 p 0-2043 p 0-2510 p 
0-3150 p 0-3410 p 
Oct. 19, 1876. 
xvir. 
0-0026 N 
0-0165 N 
0 0703 N 0-1260 p 0-207 
5 p 0-2280 p 
Feb. 24, 1876. 
XIX. 
0-0102 N 
0 0460 n 
0-0750 n 0-1035 n 0-1650 n 
Jan. 12, 1876. 
XX. 
0-0063 N 
0-0400 N 
0-0950 p 0-1525 P 0T620P 
Jan. 23, 1876. 
XXI. 
0-0033 P 
0-0285 p 
0-1063 p 0-1305 p 
Jan. 21, 1876. 
Mean of observations, 
pages 80 to 82. 
Curve. 1080 cells. 1200 cells. 2160 cells. 2400 cells. 3240 cells. 
3600 cells. 4320 cells. 5400 cells. £640 cells. 8040 cells 
inch. 
inch. 
inch. inch. inch. 
inch. inch. inch. inch. 
inch. 
XVI. 
0-0035 
0-00608 0-02204 0-0255 0'0670 
0-085 0-1253 0-2084 0*237 
0-343 
Special observations. 
Curve. : 
1200 cells. 
2400 cells. 
3600 cells. 4800 cells. 
5640 cells. 
6840 cells. 8040 cells. 
inch. 
inch. 
inch. inch. 
inch. 
inch. inch. 
XIV. 
0-0058 N 
0-0255 N 
0-08525 p 0-1675 p 
0-235 p 
0-296 p 0-346 p 
May 28, 1876. 
Curve. 
1200 cells. 
2400 cells. 3600 cells. 4800 cells. 
5880 cells. 
6960 cells. 8040 cells. 
inch. 
inch. 
inch. inch. 
inch. 
inch. inch. 
XVIII. 
0 00475 n 
0-0200 N 
0 0620 N 0-1520 P 
0-2000 p 
0-248 p 0-3400 p 
June 26, 1877. 
Curve. 
600 rod cells. 1200 rod cells. 
1800 rod cells. 
2400 rod cells. 
inch. 
inch. 
inch. 
inch. 
XXIII. 
0-00330 N 
0-01300 N 
0 0345 N 
0-0535 n 
Jan. 6, 1876. 
XXIV, 
0 00191 N 
0-01075 n 
0 0380 n 
0-0565 n 
Feb. 12, 1876. 
XXV 
0-00205 N 
0-01635 n 
0 0415 N 
0-0600 p 
Feb. 12, 1876. 
XXVI. Mean. 
0 00242 
0-01337 
0-0380 
0-0567 
XXV 11. Theoretical 
. 0-003544 
0-014176 
0 03196 
0-0567 
It is remarkable that the striking distances of 1080 and 2160 cells in curve XIX., 
and especially those of XXIII., XXIV., and XXV., obtained soon after two batteries 
each of 1200 rod cells were first charged up, in a single day, are much greater than 
M 2 
