1896-97.] Experiments on Electric Properties of Uranium. 427 
It will be seen from the last two columns of the table that the 
rate of leak at 4 volts and at 96 volts is nearly proportional to the 
atmospheric pressure. The results obtained at 3*6 mms. are not 
very reliable. With lower pressures no appreciable leakage at 
these two voltages was observed. 
Hydrogen. 
a. 
Atmospheric 
Pressure. 
B. 
Leakage per Minute 
at 4 Volts per 
2 mms. 
a 
If, 
V a 
760 
37 
•0487 
1-34 
197 
11 
*056 
•77 
66 
4 
•061 
•49 
8 
1*5 
'187 
•53 
With lower pressures no leakage was observed. The leakage is 
at higher pressures somewhat approximately proportional to the 
pressure, at lower ones to the square root of the pressure. 
Oxygen. 
a. 
Atmospheric 
Pressure in mms. 
0. 
Leakage per Minute 
for 4 Volts per 
2 mms. 
P' 
a 
j8 
\/ a 
760 
125 
•16 
4-5 
205 
48-5 
•236 
3*38 
64 
15-0 
•234 
1-87 
2 
2*0 
1-0 
1-414 
Carbonic Acid. 
Atmospheric Pressure 
in mms. 
Leakage per Minute for 
4 Volts per 2 mms. 
Leakage per Minute for 
100 Volts per 2 mms. 
760 
94 
167 
62 
18 
21 
2 
... 
Not observable. 
