ning smoothly; the motor, with its many cylinders purring like a big cat.
"We could have lunch, if we'd brought along anything to eat," observed Tom.
"Yes," assented his companion. "But I think we'll go back now. Your father may be anxious. Just come here, Tom, and I'll show you how to steer. I'm going down a short distance."
He depressed the rudder, and the Red Cloud shot earthward. Then, as the airship was turned about, the young inventor was allowed to try his hand at managing it. He said, afterward, that it was like guiding a fleecy cloud.
"Point her straight for Shopton," counseled Mr. Sharp, when he had explained the various wheels and levers to the lad.
"Straight she is," answered the lad, imitating a sailor's reply. "Oh, but this is great! It beats even my motor-boat!"
"It goes considerably faster, at all events," remarked Mr. Sharp. "Keep her steady now, while I take a look at the engine. I want to be sure it doesn't run hot."
He went aft, where all the machinery in the car was located, and Tom was left alone in the small pilot house. He felt a thrill as he looked down at the earth beneath him, and saw the crowds of wonder-gazers pointing at the great,
