hant pleaded.

"Me too!" said Larry, feeling that he ought to be heard.

"D-d-do it, F-f-frank!"

"All right, fellows," replied the other, nodding and smiling, as if
something had pleased him. "Suppose we sit down on that long bench in
front of the shed."

He had no sooner dropped upon the wooden settee than there were a
couple of eager boys hanging over either shoulder.

"It's a challenge, all right?" said Andy, his eyes sparkling.

"Yes, that's where you hit the nail on the head," replied the other.
"And like everything that Percy manages, it is gotten up in a way to
sting. We might decline an ordinary, everyday challenge; but he
manages to fix it so that you've just got to accept, or be set down as
afraid."

"Huh! no danger of our not taking him up on anything that's half way
fair," said Andy, promptly. "And now suppose you read it out to us,
Frank."

"Here goes then. He's got it headed 'A Challenge!' And then right
below he gets down to business in this way: 'Frank Bird and Andy Bird,
Aviators!'"

"Wow!" cried Larry, "that sounds all the good; but he's giving you that
taffy only because he wants to claim the same title himself; ain't it
so, Frank?"

"You'll see presently. Here's the way he goes on, fellows: 'Greeting:
I hereby challenge you to a trial of skill and speed with our
respective biplanes, same to take place within three days from date, at
an hour to be selected mutually. Said test to include first, a thirty
mile straightaway race, and circle the liberty pole on the Commons at
Hazenhurst; next altitude, to be decided by the barograph carried on
each biplane; then three times around the peak of Old Thunder Top; and
finally the feat of volplaning from the greatest height, to land on
Bloomsbury high school campus. Other rules for this race to be
arranged between us at a meeting to be held later on. If you decline
to accept this challenge I propose to go over the aforesaid schedule
alone, and claim a victory.' And then underneath it all he signs
himself: 'Percy Carberry, Aviator.'"

The boys looked at each other.

"Sounds like a real good test, Frank!" suggested Larry, cautiously.

"Just what I was going to say," Elephant put in, watching Frank's face,
and seeing what he considered favorable signs there.

"And I move for one that the challenge be immediately accepted, so that
further arrangements may be made!" Andy observed, grimly.

"Well," remarked Frank, slowly; "we'll consider