Nikola Tesla is said to have completed the apparatus which will-enable him to telegraph around the world without wires. By a device of his invention he says he can disturb the electric currents continually playing through the ground of the earth's surface. Other apparatus which he has prepared will enable these currents to be tapped at any point and the disturbance noted and measured. A system of telegraphing can easily be adapted to the invention. This telegraphing through the earth without wires has been the dream of Tesla for years. In a different way Marconi, the young Italian in Great Britain, has also either wholly or partially solved the problem.
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