( 220 ) 
leads, condenser plates ete. will be so little altered by this, that 
an error from this change is scarcely to be feared. 
The whole of the connecting wire is hence reduced to the above 
mentioned wire J which has already a small capacity. The error 
is still further reduced, as D is inductively affected by the metal 
cover of the calibrating condenser and hence may be considered as 
part of the inner plate of this. 
The results of a calibration performed in the manner described 
above are given in the second column of Table I. 
TABLET: 
— | — 
Capa- | Position 
| of the Diff. 
ye glass plate 
Q | 8.40 | 
“6265 
ij: 15.05 | 
| 6.40 
2 21.45 | 
| 6.20 
SP OB Gas) 
| 5.95 
4 | 338.60 
| 6.10 
Bl = 39.70 
| 6.20 
6 45.90 
6.35 
7 52.25 
6.58 
8 58.83 
6.70 
9 | 65.53 
| 6.78 
10 72.31 | 
6.41 
11 78.72 
| | 6.16 
12 | 84.88 
| 5.59 
13 90.47 
5.25 
14 zele" Ona 
| 4.96 
15 | 100.68 | 
4.54 
L621. 105.22 
| 4.17 
17 109.39 | 
4.13 
18 «| {ts 52 
3.62 
19 117.14 
These numbers are the means of four series of observations in 
which the maximum difference was 0.2 mm. They form the basis of 
