"Now, with upper air layers proven conductors, the electric waves must be deflected from above as well and bent downward to follow the earth's curvature." And thus electric signals, silent but all pervading, will before long circle our globe by their repeated deflections through this great speaking tube around the earth. The mysterious negative corpuscles, more minute than our smallest atoms, thus are themselves the very basis of the practicability of wireless telegraphy, our latest invention. Nay, more, may not these ions or corpuscles be atoms of electricity, and, being a thousand times smaller than atoms of matter, impregnate them with positive and negative force? Inventors have been endeavoring to send messages over long distances without wires ever since the first tests were made in 1896. Only recently Marconi has succeeded in sending them across the Atlantic, two thousand miles through the air. The distance to which messages may be transmitted and received depends on the amount of electric energy employed, the frequency of oscillation in the radiating system, the length of the electric waves emitted, the height of the perpendicular wires from the ground, the medium through which the waves are propagated, the sensitiveness of the coherer or receiver, and the precision with which the instruments are adjusted. Long electric waves are radiated to greater distances than shorter ones, and much depends on the syntonic system, or tuning of the instrument, so as to communicate with any selected receiver to the exclusion of all others. An electric generator supplies the source of electricity for operating an induction coil to transform the low pressure into an alternating current of high pressure. This charges the wire suspended from a mast and the wire leading to the earth to a sufficient potential to cause the opposite charges of electricity to rush together, thus forming a spark or disruptive discharge through a small air gap; as a result high potential currents surge to and fro through the wires hundreds of thousands of times per second. These high potential currents radiate electric waves which are propagated as light waves and spread out in every direction. It is said the whole process of transmitting and receiving wireless messages is not unlike to the emission of light and its reception by the retina of the eye. The reception of these waves is by means of a vertical wire similar to that used in transmitting, the difference being the wires at the terminals are connected with metal filings inclosed in a small glass tube called the coherer instead of the spark gap. The electric waves impinge on the elevated wire and are converted into electric oscillations, which act on the filings, and an auxiliary circuit registers the impulses on a ribbon of paper in readable Morse dots and dashes. The higher the vertical or mast wires and the greater the number of wires, the greater the wave length and the farther the distance transmitted.