ELECTRIC DISCHARGE WITH THE CHLORIDE OF SILVER BATTERY. 
97 
depression 0*5 m.m., total pressure 255\5 m.m., ratio of increased pressure 1-002. 
The appearance as shown in I), fig. 84, the arc first formed in the centre, then ran 
all over the surfaces of the terminals, lastly becoming steady, as seen in edge view on 
the left, and side view on the right. 
Distance X 5 = 1-125 inch, pressure 200"8 m.m., 264,211 M, current 0'02634 W, 
depression not observed. The arc at first formed in the centre, as seen in E, fig. 84, 
and then ran all over the surface, as in D. 
Fig. 84. 
Distance X 10 = 2-250 inches, pressure 164-1 m.m., 215,921 M, current 0‘02056 W. 
The discharge as in F, fig. 84 ; on the positive there formed a number of beads 
of fight. 
Distance X 25 = 5-62 inches, pressure 6D8 m.m., 81,316 M, current 0-01272 W. 
The discharge in form like a fig ; a number of beads of light forming on the positive, 
and the arc ending in a rounded point (the stem of the fig) on the negative G, fig. 84, 
reduced to one-third. 
Distance 5-62 inches, pressure 2-3 m.m., 3026 M, 2400 cells, current 0‘08923 W. 
MDCCCLXXX, O 
