“That’s what we are,” went on Ned. “Come on in and see it. We’ve got it almost done. We’ll have a trial flight soon.”

“An airship! Building an airship!” repeated the scientist, as if unable to believe what he had heard.

He was led inside the tent. The big proportions of the Comet seemed to amaze him.

“It really is an airship,” he said, as if, up to that moment, there had been some doubt about it.

“Of course it is, and we’re going to take a long trip in it,” went on Jerry. “What do you think of the idea?”

“Excellent! Most excellent!” cried the professor enthusiastically. “I hardly knew what to think at first, but it is most excellent. That is better than the motor boat or the automobile. You will be able to go where you please now. How did you come to think of it?”

Jerry related the outcome of their visit to the Broadlands carnival, telling of how they met Mr. Glassford. The inventor was introduced to the scientist, and they seemed to be on friendly terms at once.

“A trip through the air,” mused the professor. “That is a great idea—a great idea. Most excellent. There, I have it!” he cried suddenly.

“What? Another green horse-fly?” asked Johnson, thrusting his head in through the tent flap.