best the Bird boys."
"They float all right," remarked the other boy, still gazing through the fine pair of marine glasses that seemed to bring the biplane within touching distance. "But how under the sun can they start up again? Don't they have to take a run on them bicycle wheels first?"
"Watch and see," laughed Mr. Marsh. "A hydroplane can rise from the surface of the water just like a wild duck might. The propeller starts to working, the machine is sent swiftly along, and soon leaves the water, to soar upward as the planes are moved accordingly. There they go; now, keep tab on what they do, Longley."
He took the glasses from Elephant and placed them to his own eye, as though it might be of the greatest importance that he see distinctly every little movement of the daring young aviators.
"Whoop! hurrah! there they quit snaking along on the water! They're going to climb, I tell you, Larry! Look at that, would you? Up they go, as easy as you please! Now, ain't that just a hummer;