Similarities between the Earth current observed at Jersey, England, and an electric tide derived from the ocean tide

In my second note on the natural electric current observed under ground at Jersey, England, I showed that its diurnal variation obeyed a law similar to that which governs the ocean tide and that it may be concluded that there exists in the soil an electric tide which is the counterpart of the ocean tide. Pursuing further this interesting investigation, I have found that these two tides should be considered as related to each other even to such an extent that the first may be regarded as derived from the second. My opinion is based on the following points: 1. The two tides present a common form of diurnal variation which is not a double regular sinusoid, since the intervals of the phases are not equal.