( 226 ) 
2. Oxygen. 
10 July: 
fy = OTA TNO tle Means 57.72 
yg = 86.15; 86.10; 86.05; 85 85; 85.95 86.02 (20.45) 
The corresponding capacities are. 
(z, = 2.000) 
UR 1.843 
ry = 12.200 
This gives the above defined difference. 
Tor = 3.731. 
As the glass plate can only be moved from 21.45 to 8.46, an 
auxiliary condenser must be employed; it is however scarcely worth 
while to communicate the resulting data in extenso. 
From the above results and formula (7) we obtain the following 
values for the dielectric-coefficients : 
14.191 + 3.731 
MO == 1,912 
5.640 + 3.731 
nn En (8) 
Ko, = pO ARR eye! wt BE 
25848 8.781 | 
To these values we can make a correction; we must consider 
that not only the experimental condenser but also the leads were 
immersed to a definite height in the liquid gas, while the entire 
length of the leads was 88 cm. The value 
d 
PAS cr == 3.781 
only applies rigidly when the whole lead is in air. When the 
capacity of the condensers filled with liquid gas is required the 
quantities d and (#, — 79) must be multiplied by 
Gt * a) 
where K is the dielectric-coefficient of the medium. For this cor- 
rection the approximate values given by (8) are quite sufficient, and 
