NICOLA TESLA, the noted electrical scientist, has a theory, which he claims has been demonstrated, that the old law which declares that force diminishes with the distance, is not true of electricity, which may be made to increase in intensity with the distance traveled, and therefore there can be no limit to the power of an electric wave, which increases in intensity the farther it goes. Tesla's system, he claims, when it is worked out, will make the earth a gigantic dynamo, in which can be employed from five million to one hundred million volts; that a message can be sent around the world in forty-three thousandths of a second — fifty per cent more rapidly than light. Out of this he predicts television, making it possible to see any object at any distance, universal twenty-four11hour daylight by wireless illumination; operation of flying-machines by wireless power; communication with Mars; and twelve other things, which will probably be demonstrated to be equally impossible, or at least not developed by Mr. Tesla. It will be worth while to remember that he has promised so many things in the past which have not been met.