is group if he
could find the owner."

"Who is he?" asked the quartet's spokesman.

"His name is Perry and he lives at Oswego, New York," Bud replied.

"Well, you all go somewheres else to talk that matter over and then take
it up with my real estate agent. Meanwhile I don't allow no trespassers
on this ground."

"But we can't go until our friends come back with their boat," said Hal.
"They promised to return soon."

"Where did they go?"

"To the Canadian Coast."

"What fer?"

"To get another friend who will join us."

"Well, they'd better hurry up or they won't find you when they get back."

"What's that you got there?" asked the man who had been addressed as
"Spike", indicating the radio table and outfit thereon.

"That's a wireless outfit, you goof," replied the tall, angular
spokesman.

"I tell you what we'll do," Hal announced, taking inspiration from the
attention thus called to his radio apparatus. "We'll call our friends by
wireless and have them return at once and take us away. How's that?"

"All right," was the assenting response. "Go ahead, but be careful, no
tricks, or our revenge will be speedy, and that's no name fer it."

With this warning the four men walked away and Hall got busy with a
diligence inspired by a sense of danger and, at the same time, a sense of
the opportunity afforded by the possibilities of the world's latest great
invention, radio.

CHAPTER XIX

"S O S" from Friday Island

Max Handy, the Canadian youth at Rockport, who gave the crew of the
Catwhisker, by wireless, directions whereby the latter were able to
locate "mathematically" the whereabouts of the "Canadian Crusoe's Friday
Island" listened in much of the time thereafter, in the hope of being
able to keep in touch with developments to the end of this interesting
radio affair.

And this hope was realized in a degree that could hardly have been
expected with moderation. But he was well equipped, and, being
mechanically inclined, and industrious, he was able to get a maximum of
results with his sending and receiving outfit.

He had traced the rescue yacht all the way from Oswego to Friday Island,
and the last message he had picked up from the three young radio
Americans was the one that completed the agreement under which the yacht
was to proceed to Rockport next day and meet the father of the "missing
Crusoe". Then he attempted to get in communication with the island
operator, but Mr. Perry had just