352         Dr.  Gundry 
Cathodic  Polarization. 
the  Asymmetrical  Action  of  an 
Table  XII. 
E.M.F.  of  small  electrode  0*0  volt. 
Freq. 
Altern. 
Direct 
I 
! 
;  Freq. 
Altern. 
Direct 
I 
Current. 
Current. 
v' 
Current. 
Current. 
Vs 
amp.  10-4. 
■ 
amp.  10-7. 
amp.  10-4. 
amp.  10—7. 
13C0 
193 
1-29 
346 
2530 
3-28 
1-73 
1-61 
2-18 
2-2 
4-59 
3-76 
2-55 
1-80 
2-44 
2-43 
4-25 
425 
3-26 
1-80 
1504 
221 
1-495 
305 
2990 
2-74 
1-24 
1-62 
250 
215 
3-44 
| 
3-29 
3-83 
2  22 
341 
2-05 
2-32 
1725 
2-54 
1-87 
2-90 
i 
2-88 
2-44 
2-95 
j  3920 
2-79 
3-49 
0-77 
21 
0-99 
1-94 
2060 
266 
1-53 
246 
3-06 
2-02 
246 
1400 
2-34 
1-64 
30 
3-46 
2-88 
2-40 
1 
J 
2'61 
_ 
2-32 
34 
Table  XIII. 
Cathodic  Polarization. 
E.M.F.  of  s 
mall  electrode  0*13 
volt. 
Freq. 
Altern. 
Direct 
I 
:  Freq. 
| 
i 
Altera. 
Direct 
I 
Current. 
Current. 
i  2" 
'o 
Current. 
Current. 
V5" 
amp.  10-4. 
amp.  10-7. 
i 
amp.  10— 4. 
amp.  10— 7- 
1380 
2-88 
1-76 
212 
3320 
3-08 
3-67 
129 
26 
1-36 
1-93 
1579 
2-98 
330 
1-75 
313 
1-97 
2-88 
1 
1  3620 
2-64 
0-745 
107 
1819 
340 
3-46 
1-75 
2-54 
1-82 
2-18 
i 
332 
1-885 
1-70 
2320 
303 
1-24 
1-35 
|  4160 
2-96 
1115 
1-27 
3-47 
2-34 
1-94 
3-74 
2-75 
1-97 
3-93 
4-9 
348 
2780 
342 
1-21 
1-24 
1  1429 
2-70 
1071 
1-47 
3-68 
222 
1-69 
2-99 
1-755 
1-96 
It  appears  from    these  results,   that  it  is  only  when  the 
electrode  is  practically  saturated  with  the  respective  gas  that 
there  is  any  approach  to  constancy  of  r-g  for  a  given  frequency, 
When  the  electrode  is  unsaturated,  the  direct  current  increases 
much  faster  than  a  quantity  proportional  to  the  square  of  the 
alternating  current. 
It  is  also  to  be  seen  that  the  diminution  of  the  sensitiveness 
with  increase  of  frequency  is  less  than  in  the  case  of  mercury. 
