"Well of all things!" cried Mr. Damon. "What are you up to now, Tom
Swift?"

"It's my noiseless airship," explained our hero. "She doesn't make a
sound. Get aboard, and have a ride."

Mr. Damon looked toward the house.

"I guess my wife won't see me," he said with a chuckle. "She's more
than ever opposed to airships, Tom, since we went on that trip
taking moving pictures. But I'll take a chance." And in he sprang,
when the two lads started up again. They made quite a flight, and
Tom found that his new motor exceeded his expectations. True, it
needed some adjustments, but these could easily be made.

"Well, what are you going to do with it, now that you have it?"
asked Mr. Damon, as Tom once more brought the machine around to the
odd man's house, and stopped it. "What's it for?"

"Oh, I think I'll find a use for it," replied the young inventor.
"Will you come back to Shopton with us?"

"No, I must stay here. I have some letters to write. But I'll run
over in a few days, and see you. Then I'll go on another trip, if
you've got one planned."

"I may have," answered Tom with a laugh. "Good-bye."

He and Ned made a quick flight home, and Tom at once started on