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From this time the question became the playing ground of the Cartesian and other philosophers. The struggle was between theories of 'atoms, magnetism, 'corpuscules, electric effluvia, and so forth, on one side, and the immediate action of devils or of conscious imposture, on the other.

As experiment has shown, in all the circumstances where it has been possible to effect measurements, the equality of the charges carried by all corpuscules, ions, atoms, etc., we ought to consider that the charge of the electron is here, again, that of a univalent ion in electrolysis, and therefore that its mass is only a small fraction of that of the atom of hydrogen, viz., of the order of about a thousandth part.

Professor Arrhenius explains, for instance, the polar auroras by the action of similar corpuscules emitted by the sun. In other phenomena we seem indeed to be confronted by an emission, not of negative electrons, but of positive ions. Thus, when a wire is heated, not in vacuo, but in a gas, this wire begins to electrify neighbouring bodies positively.

Not only were the little volant beings siphoned up in untold numbers from their normal life of sleeping, feeding, dancing about their mates, but they were blindly poured into an invisible artery, down which they flowed in close association, véritables corpuscules de papillons, almost touching, forming a bending ribbon, winding its way seaward, with here and there a temporary fraying out of eddying wings.

He begins with the monera, the organisms of the lowest form, discovered by himself, which have not so much as the organic rank of a cell, but are only corpuscules of mucus, without kernel or external covering, called by him cytod, and arising from an organic carbon formation.