Alternating  Current  on  a  Polarizable  Electrode.       345 
All  these  experiments  were  done  directly  after  one  another. 
Table  II.  shows  the  results  of  another  set  of  experiments, 
all  done  together,  but  on  another  occasion. 
The  two  sets  of  results  are  brought  together,  and  the  value 
NI 
of  -rs   is  given  in  Table  III. 
V       & 
Table  IT. 
Frequency. 
Altera. 
Current 
to- 
Galvan. 
Den. 
Direct 
Current 
I. 
I 
•7 
1700 
i 
! 
10— 5  amp. 
8-63 
1431 
20-1 
260 
130;  121 
302;  29-3 
56-7;  51-3 
77-7;     ... 
10—8  amp. 
10-82 
25  62 
46-6 
67-2 
1452] 
1252  L  1214 
11-56  f  U  14 
996  J 
2290 
18-18 
25-4 
51     ;  365 
77-3;  76-8 
39-02 
66-40 
10-30  j110b 
3260 
150 
250 
34-9 
21     ;  19-5 
48-3;  47-0 
80-7;  79-7 
17  48 
41-0 
692 
7-76] 
6-56  I  6-66 
5-68  J 
5000 
21-8 
28-8 
361 
50'6 
28-2;  26-7 
45-6;  43-2 
633;  630 
1007;     ... 
23-62 
38-24 
54-4 
80-4 
4-96] 
4-60     . -a 
4-18  \ 4o8 
3-14  J 
Table  III. 
Frequency 
I 
NI 
N. 
h" 
«o2 
83 
966 
80200 
181 
247-8 
44800 
288 
138-2 
39800 
442 
587 
80-2. 
35400 
3002 
17500 
1028 
14-00 
14380 
3100 
4-32 
13400 
1700 
12-14 
20600 
2290 
11-06 
25300 
3260 
6  66 
21500 
5000 
4-58 
22820 
The  difference  in  value  for  the  two  sets  shows  that  the 
condition  of  the  solution  is  variable.  I  found  in  general 
that  results  could  only  be  compared  when  they  were  obtained 
on  the  same  day. 
Phil  Mag.  S.  6.  Vol.  11.  No.  63.  March  1906.       2  A 
