airship!"

"Of course he won't!" added Sam and Pete, bound to side with their
crony, to whom they were indebted for many automobile and motor-boat
rides.

"Just wait," advised Tom, with a tantalizing smile. "Meanwhile, if you
want to try the Red Streak against the Arrow, I'm willing. I have an
hour or so to spare."

"Aw, keep still!" muttered Andy, much discomfited, for the defeat of
his speedy boat, by a much smaller and less powerful one, was a sore
point with him. "You just wait, that's all. I'll get even with you!"

"Look here!" cried Tom, suddenly. "You always say that whenever I get
the best of you. I'm sick of hearing it. I consider that a threat, and
I don't like it. If you don't look out, Andy Foger, you'll have
trouble with me, and at no very distant date!"

Tom, with flashing eyes, and clenched fists, took a step forward. Andy
shrank back.

"Don't be afraid of him," advised Sam. "We'll stand by you, Andy."

"I ain't afraid," muttered the red-haired lad, but it was noticed that
he shuffled off. " You just wait, I'll fix you," he added to Tom. The
bully was plainly in a rage.

The young inventor was about to reply, and, possibly would have made a
more substantial rejoinder to Andy than mere words, when the gate