He also declared that an apparatus directed by a man only would never fly successfully, because it would prove too weak withstand the heavy air current. A man is only able to generate one-half atmospheric horse power, and he can never be able to generate two atmospheric horse power, which Prof. Lillienthal proved was necessary to lift a man weighing 150 pounds. Herr Stentzel found, when he came to consider carefully the weight of each substance that went to make up the total of his machine, that the aggregate weight of them all would sum up 300 pounds. This was the basis on which the new invention was built.
To secure what is equivalent to one horse-power it is necessary that a pressure of five atmospheres be obtained: and the greater the horse-power, the more capable is the machine of continued locomotion in the air. This is the point, and here, Herr Stentzel says, lies the solution of the prohiem. Can he develop the necessary horse-power, and will his machine respond to the mechanical stimulus is thus receives?
The inventor mourns, as inventors usually do, the lack of necessary capital to carry on his experiments.
“After the beginning always comes continuation,” continued Herr Stentzel. “I am sure that there is no limit to the possibilities of my machine. It is just like a growing plant. First you see the shoot above the ground, and then it gradually grows and waxes strong, and presently it begins
