electric discharge with the chloride of silver BATTERY. 203 
steady stratification in groups of three strata, fig. 57, as the tension fell the 
strata became tongue-shaped and agitated, hugging the tube. As the tension 
still further fell discs were formed, which gradually became wider apart. 
Fig. 57. 
TUBE 1 22. 
Tube 108, 27 inches long, 24 inches between the straight terminals, diameter 
2 ‘3 7 5 inches. 
Nitrogen and Bromine. 
185. — The battery was connected with the 42 '8 m.f. condenser to charge it up 
fully, and was then disconnected ; as the tension ran down, it was measured 
by means of the electrometer, a charge being taken from the mushroom, 
fig. 28, Part I., by means of the test plane T. 
1080 cells gave a deflection of 24 '3 3 divisions, =22' 5 per 1000 cells. 
2160 „ „ „ 51-25 „ =23-8 
3240 „ „ „ 80*75 „ =24-9 
Mean 23 7 ,, ,, 
When the condenser gave a deflection of 50 divisions, = 2109 cells, there 
were produced, with a resistance in circuit of 1,200,000 ohms, 76 tongue-like 
strata, as 1, fig. 58. 
Fig. 58. 
186. — When the potential had fallen to 45 divisions, 1898 cells, with the same 
external resistance as before, strata, like 3, fig. 58, were produced; the 
second stratum from the negative was perfectly steady, but the others took 
up a dancing movement, each splitting into two. 
187. — When the potential had fallen to 32 divisions, 1350 cells, still with 
1,200,000 ohms resistance, there were fifteen steady strata, as 3, fig. 58 ; as 
the tension fell a little lower the stratum nearest the negative turned over, 
2 d 2 
