387 
that in consequence of the current transportation an increase of 
760 
A — .0,23.10-%.0,565 takes place at the anode, whereas at the 
Pp 
760 
anode the quantity of gas is diminished by A ——.0,23 .10-%.0.485 
E 
through the current transportation. 
760 
Hence there remains an increase at the anode of A— . 0,23 . 
his. 0.13. 4 
In the same way at the cathode a decrease is found of 
A i Oto. 10 O18: 
The difference between anode and cathode, therefore, becomes: 
760 she 760 
A — . 0,23. 10-3 . 0,26 —= A—.2,3.10-4. 1,04, 
p 4p 
which is practically the same as formula 5 of p. 385. 
In many cases the point of issue given here will be preferable 
to the supposition formulated in the beginning of § 5 under 6. 
It is, however, clear that under definite circumstances negative 
ions resp. electrons may act as attraction nuclei. We may refer e.g. 
to the condensation experiments of Witson in a nearly related case. 
Then it might very well happen that through the discharge of the 
negatively charged particles a great number of molecules is liberated 
at the anode. 
d. Application of equation 3 yields entirely different results. 
Combination of this equation with (5) gives: 
A 760 Ty 
- 2,82. 10-4= 136 — pp .(p,—p,)/p, + - . (8) 
Pon L 
Substituting the same numerical values as above we have: 
400 760 1G Al eee 2.102 A 
EA Os 5.200 Ps 
A p = 2700 baryes =| 2,0 mm. |, 
which value is so many times greater than the observation in this 
pressure region, that it must be looked upon as of an entirely different 
order of magnitude. 
Besides, the experiments teach that it is contradictory to reality that 
the pressure effect should be in inverse ratio to the gas pressure, as 
would ensue from formula 8. In reality within a pressure area lying 
between 0,2 and 0,5 mm. the value of Ap appears experimentally 
to vary little, if at all, with p, which is in harmony with formula 7. 
Hence formula 8 should be rejected. Apart from the reasons set 
