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11But as the various opinions, among which Aristotle wavers and hesitates, suggest, earthquakes are engendered either in small caverns under the earth, which the Greeks call σύριγγες, because of the waters pouring through them with a more rapid motion than usual, or, as Anaxagoras affirms, they arise from the force of the wind penetrating the lower parts of the earth, which, when they have got down to the encrusted solid mass, finding no vent-holes, shake those portions in their solid state, into which they have got entrance when in a state of solution. And this is corroborated by the observation that at such times no breezes of wind are felt by us above ground, because the winds are occupied in the lowest recesses of the earth.
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