Abstract
Long‐period variations of the Earth's magnetic field and pseudo‐magnetic variations accompanying earthquakes must be related in some manner to the conducting regions inside the Earth. In the present paper we will turn our attention to the interior of the Earth and investigate in a rough quantitative manner some of the electromagnetic reactions which appear to have bearing on terrestrial‐magnetic phenomena. Very little is known about general earth‐movements but it seems clear that the transport of material by large rivers from one part of the Earth to another will compress the interior layers where it is deposited and will permit a general expansion of the denuded region. If the core of the Earth is semi‐liquid, it seems reasonable that such a phenomena nay easily give rise to a general oscillation of long period which may be accentuated by tidal forces. Such motions are important in the geological history of the Earth and any mechanism which permits a study of them seems of interest.
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