266 
DR. HAROLD A. WILSON ON THE 
Time. 
1 
1 
Balancing resistance 
(p == 0 ■ 10 millim.). 
Current. 
1 minutes. 
! 12 
3500 
no 
15 
3500 
100 
16 
3500 
102 
18 
3500 
102 
19 
3400 
28 
22 
3400 
30 
23 
3300 
11 
2.5 
3300 
15 
28 
3300 
19 
30 
3300 
22 
33 
3300 
1 
22 
The above numbers show the effect of lowering the temperature at constant 
pressure. The current drops and then gradually rises, ultimately becoming steady 
when ecpiilibrium has been established. Of course it is necessary to be sure that 
equilibrium has been reached at the higher temperature before changing to the lower 
temperature, in order to observe this effect, and to get equilibrium at the higher 
temperature may take a long time in some cases. 
Time. 
Balancing resistance 
(p = 0 - 34 millim.). 
Cirrrent. 
j minutes. 
1 6 
3200 
16 
8 
3200 
15 
. 11 
3600 
1800 
16 
23 
3600 
1200 
3600 
900 
These numbers show the effect of suddenly raising the temperature at constant 
pressure in hydrogen. 
1 
1 
Pressure 
i 
Time. 
(Balancing resistance 
Current. i 
! 
= 3700). 
1 
minutes. 
1100 
30 
0-071 
60 
0-071 
1100 
98 
0-071 
1200 
114 
0-012 
1200 
116 
0-012 
1000 
118 
0-012 
720 
157 
0-012 
280 , 
The above numbers show the effect of lowering the pressure at constant temperature. 
