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come into account. ${\mathfrak {H}}$, which should serve to determine the magnitude P, is indeed composed of the vector specified by (26) and the magnetic force which is generated by the compensation charge. The latter magnetic force is of order ${\mathfrak {p}}^{2}/V^{2}$, and since in equations (§ 25) that serve to determine $\chi _{x}$, $\chi _{y}$, $\chi _{z}$, also just the square of ${\mathfrak {p}}$ is included, then the values (26) differ only to second order from the expressions that apply to a stationary earth.

By proving, that no first-order influence may be expected from the phenomena of induction, we have achieved the explanation for the negative result of Des Coudres^[1].

1. Actually, we would have to consider now, under consideration of the Earth's motion, the effect of the induction of a galvanometer. In the experiments of Des Coudres (Wied. Ann., Vol 88, p. 71, 1889) an induction role was located between two successive connected primary roles, which have been streamed by the current, so that its effects are just compensated. Since, whatever influence the translation may have by the way, the galvanometer must remain at rest if I disappears, thus we may infer from the theory that, neglecting magnitudes of second order, the compensation is not disturbed by Earth's motion.