had increased the size of some of the bat-like wings that extended on either side.
Herr Doodlebrod was the calmest person in the big crowd. He went about looking at the wheels, levers, rods, rudders and the propeller as if he was merely a spectator. But his sharp eyes did not miss anything. He detected a loose screw in the motor and called for a tool to adjust it. Then, having seen that the gasolene tank was filled, and that the various handles for controlling the machine worked smoothly, he took his place in the basket-car, which had been enlarged.
"Vould you not like to come?" he asked of Dick. But Dick shook his head in dissent.
"You come," the inventor invited Colonel Claflin, but the government representative begged to be excused.
"I may try it with you after your first flight," he said.
As the specifications called for the carrying of two passengers the absence of one was made up by some bags of sand to give the necessary weight.
"Iss all clear?" asked Herr Doodlebrod.
"Clear she is," replied his chief helper.
"Den here I goes!" exclaimed the inventor as he started the motor and threw in the clutch operating the propeller.
The big arms beat the air and hummed shrilly as they whizzed around. The new motor made
