| OCR Text |
Show What Is and Is Not Perpetual Motion. As is generally known, a perpetual motion machine is one to be moved by a power furnished by tho machine itself and not from any Bource outside of it. A mill or a clock run by the incessant rise and fall of the tide is not perpetual motion. Neither is a machine that runs by the power of terrestrial or other magnetism, mag-netism, or of the wind, or of variations in the weight of the atmosphere, or by electricity coming from outside of the machine, or by the force of her.t coming from the snn. A wheel that could always al-ways of itself keep more weight at one side than the other and thus turn so long as its materials lasted wonld ba perpetual motion, and such has been tho form of most of the machines invented for the purpose. Chicago Herald- |