ELECTRIC DISCHARGE WITH THE CHLORIDE OF SILVER BATTERY. 
101 
upper half was found to be 1530 cub. centims., that of the lower half 1755, total 3285, 
or somewhat less than the jar, fig. 79 (3787). 
Instead of putting separate gauges in connexion with the two chambers, as was 
originally contemplated, the lower chamber only was connected to the gauge, as in 
fig. 81, p. 86, and the lower terminal was made + or — alternately. 
Air. Points distant 5 inches. 
In a preliminary trial with the central hole 0‘5 inch diameter, and a pressure which 
was not recorded, but at which 8840 cells just passed, the depression of the gauge 
when the lower terminal was negative or positive, was— 
Lower terminal. 
— 
+ 
m.m. 
m.m. 
27 
19 
21 
19 
23 
20 
Mean 
■ • 23f 
19 * 
Central hole 0'12 5 inch diameter, temperature 15° C., pressure 60‘9 m.m., 80,132 M, 
11,000 cells, current 0 - 03657 W, the jar-potential was found to be 3550 cells, 
depression— 
Lower terminal. 
Mean. 
Ratio of increased to normal pressure . 
— 
+ 
m.m. 
m.m. 
28 
24 
26 
23 
27 
23-5 
1-44 
1-39 
The appearance of the discharge is shown in Plate 10, fig. 24, which is copied 
from a drawing. 
Pressure 65‘2 m.m., 85,789 M, temperature 13 '9 C., 11,000 cells, current 0'0468G W, 
jar-potential 3188 cells, depression— 
Lower terminal. 
Mean. 
Ratio of increased pressure . 
— 
+ 
m.m. 
m.m. 
23 
27 
22 
26 
22-5 
26-5 
1-34 
1-41 
