"It is that no money from this invention comes to me. If I win the twenty thousand dollar prize I'll be content."

"What are you going to do with the money?" asked Paul Drew, for Dick really had no need of it.

"I'll build a new gym, at Kentfield," was the reply. "Our present one is too small. We need an indoor baseball cage too."

"Good for you!" cried Innis. "You're a real sport!"

In the evolutions of the airship each one aboard was given a chance to pilot her. He was also allowed to stop and start the machinery, since it could not be told at what moment, in an emergency, someone would have to jump into the breech.

It was about three o'clock in the afternoon, when Dick's ship was nearing the Western borders of Pennsylvania, that Paul, who was looking down through the celluloid floor in the cabin, cried out:

"Something going on down below us, boys!"

All save Innis, who was steering, crowded around the odd window.

"Why, there's an airship meet going on down there," said Dick. "Look, there are a lot of monoplanes and some biplanes."

"Let's go down a bit and salute them," suggested Larry.