Mrs. Baggert, the housekeeper, running from the house and wringing her hands. "I'm sure they'll fall!"
She looked up apprehensively, but Tom only waved his hand to her, and threw her a kiss. Clearly he had no fears, though it was the first time he had ever been in an airship. Mr. Sharp was as calm and collected as an ocean captain making his hundredth trip across the Atlantic.
"Throw on the main switch," he called to our hero, and Tom, moving to amidships in the car, did as directed. Mr. Sharp pulled several levers, adjusted some valves, and then, with a rattle and bang, the huge, twenty-cylinder motor started.
Waiting a moment to see that it was running smoothly, Mr. Sharp grasped the steering wheel. Then, with a quick motion he threw the two propellers in gear. They began to whirl around rapidly.
"Here we go!" cried Tom, and, sure enough, the Red Cloud, now five hundred feet in the air, shot forward, like a boat on the water, only with such a smooth, gliding, easy motion, that it seemed like being borne along on a cloud.
"She works! She works!" cried the balloonist. "Now to try our elevation rudder," and, as the Red Cloud gathered speed, he tilted the small planes which sent the craft up or down, ac-
