Current 
450 
DR. W. MANSERGH VARLEY ON THE PHOTO-ELECTRIC 
first set of readings taken being repeated at the end and in every case identical 
values obtained. 
The results given in this table are plotted in fig 9. 
Table VII. 
Current from zinc surface in electrometer scale divisions in 10 seconds in— 
Potential to which 
zinc is charged 
in cells. 
H 
2- 
1 
1 
Ail*. 
_ 
COj. 
1 
' (1 cell = 2'1 volts.) 
1 
0-36 
0-25 
0-19 
0-072 
0-44 
0-19 
0-11 
0-056 
0-016 
0-21 
0-070 
0-030 
millim. 
millim. 
millim. 
millim. 
millim. 
millim. 
millim. 
millim. 
millim. 
millim. 
millim. 
millim. 
. 
, 4 
43 
49 
48 
42 
58 
50 
45 
32 
29 
47 
_ 
_ 
20 
104 
90 
80 
55 
116 
96 
78 
56 
34 
93 
74 
61 
40 
145 
— 
— 
— 
200 
153 
— 
— 
155 
-- 
— 
60 
170 
— 
_ 
387 
— 
133 
— 
--- 
231 
— 
— 
80 
_ 
— 
96 
— 
— 
256 
-- 
— 
— 
330 
120 
100 
203 
124. 
— 
— 
— 
351 
172 
74 
— 
— 
— 
73 
120 
— 
— 
— 
— 
— 
— 
— 
140 
— : 
140 
26.5 
147 
107 
— 
— 
— 
213 
— 
— 
— 
— 
160 
362 
— 
— 
— 
— 
— 
— 
— 
— 
— 
180 
: 700 
191 
Ill 
57 
508 
SO 
34 
217 
78 
JSfotes .—The experiments were carried out in the small leak apparatus, the zinc 
electrode being; situated 3'5 millims. behind the gauze. A P.D. of 1 volt, between 
