A eolu water steam engine is spoken ot in the Cincinnati papers as a new invention.— The steam is produced without boilers by simply injecting cold water into generators. The amount of steam required to torce out or return the piston rod is made by the introduction to the influence of the fire at each moment of precisely the quantity of water needed, thus doing away with the necessity ot boilers. It is claimed that there is no possibility of an explosion, that greater power is obtained and less room occupied for the necessary machinery. The water falls into the engine, being first raised by a force pump into a reservoir situated above the engine, and thence inducted down as wanted.— [Ex. [The above project is nothing new. The same thing was proposed more than twenty years ago. It is founded upon a wrong principle and cannot succeed.