THERE are many of us, no doubt, who are watching with great interest the experiments of Herr Otto Lilienthal in his “Fliegesport and Fliegepraxis.” These “Uebungen,” which he is making ...

However, the French had already flown in a balloon (lighter-than-air aircraft) in 1783 and built the first powered and ...

Orville and Wilbur Wright were inspired by Otto Lilienthal ... and the design of the first machine, based upon our tables of air pressures, secured by months of careful laboratory work, and ...