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Show May Make Lighthouses Unnecessary. The French government Is about to establish a system of what mariners call blind lighthouses. This revolution revolu-tion in maritime signaling consists In the use of the Hertzian waves, and it Is believed It will prove of far more lasting value than lights, since In is equally effective In foggy weather when the usual lights cannot be seen. Indeed some experts look forward to the gradual extinction of coast lights and expect that ships will soon get their bearings from the ticking of wireless wire-less receivers. The great difficulty to be overcome is that of establishing establish-ing direction so as to enable a navigator navi-gator to determine accurately from which particular station tbe message comes. |