“I know my boy,” said the aged inventor quietly.

“Now let’s get this straight,” suggested Mr. Trace, who had also taken out pen and paper. “You say, Swift, that the hero of Jules Verne’s story, who circled the globe in eighty days, was a piker. I agree with you about that as far as the time consumed is concerned. With the perfection of automobiles, oil burning steamers, and fast trains, the journey can be accomplished in much less time than Verne ever dreamed possible. But to say it can be done in twenty days flat is absurd!”

“Then twenty thousand dollars is absurd,” retorted Mr. Swift. “And it’s the first time I ever heard such a sum so designated.”

“Oh, we don’t despise the money!” chuckled Mr. Trace. “We’ll take it from you willingly enough, Bart, if you are mad enough to persist in this wager. If you had said thirty days you might be within the bounds of reason.”

“Considerably nearer the truth,” agreed Mr. Burch. “The trip has been made in about twenty-eight days, elapsed time, I believe. But twenty days, Bart——”

“I say Tom will circle the globe in twenty days flat—doing it actually within twenty days!” interrupted Mr. Swift. “The only stipulation I make is that he can use as many and as different means of locomotion as he pleases—that is to say, aeroplanes, seaplanes, motor boats, steamers, or trains.”

“That’s fair enough,” stated Mr. Trace. “I’ll just make a note of that. No use passing up ten thousand dollars,” he added with a smile at his friend. “I’ll never earn that sum any easier.”

“You mean I never shall,” said Mr. Swift.

“Then this seems to be the state of the case,” went on Mr. Burch, who had been busily writing. “I’ll just run over this and we can all sign it if it strikes you as being the terms of the wagers.”

The two friends, Mr. Burch and Mr. Trace, had called for a friendly visit with Mr. Swift one day in the early summer. Some time before, Tom and his father had turned out some machines for these two men in their big shops, and in this way a firm friendship had been started.