Electro-magnetic Voice

Professor W. E. Ayrton of London stated recently that "there is no doubt the day will come, maybe when yon and I are forgotten, when copper wires, gutta percha coverings and iron sheathings will be relegated to the museum of antiqnities. Then, when a person wants to telegraph to a friend, he knows not where, he will cali in an electro-magnetic voice, which will be heard loud by him who has the electro-magnetic ear, but will be silent to every one else. He will cali, 'Where are you?' and the reply will come loud to the man with the electro-magnetic ear, 'I am at the bottom of the coal mine, or crossing the Andes, or in the middle of the Pacific.' Or, perhaps, no voice will come at all, and he may then expect the friend is dead. Think what that will mean. Think of the calling which goes on from room to room, then think of that calling when it extends from pole to pole - a calling quite audible to iim who wants to hear, absolutely ilent to him who does not. "