xe and began to chop
poles to carry the battery with. In a few moments these handles were bound
fast. The forester tossed the traps over his shoulder. Charley tied the
amplifier box to his belt. Then they picked up the battery and started
toward camp.

Suddenly Charley stopped. "By George!" he cried. "I forgot all about the
pup. I wonder where he got to."

He whistled and whistled, but apparently in vain. They went on, and at
intervals Charley whistled for the dog while he and the forester were
resting. Still no dog appeared. Charley's face grew long. "Gee! I'll miss
that pup," he said regretfully. "Why didn't I think of him sooner?"

Night was at hand when the two reached Charley's camp. Nothing had been
disturbed. Charley took advantage of the remaining daylight to couple up
the battery and the amplifier to his wireless. He tested the outfit and
found he had a strong spark that cracked like a whip when he touched the
key.

"Look at that!" he cried. "Now I feel better. I can always get into
communication with somebody now."

"You aren't a bit more pleased than I am, Charley," smiled the forester.
"I'll take back all I ever said about the wireless. If Morton can learn to
talk by wireless, the rest of my crew can also. When the dull season
comes, I'll start a radio school with you as instructor and we'll make
every man in the service learn to operate the wireless. The Department
ought to be glad to supply a good outfit; but if we can't get the money,
we can at least make some outfits like yours. We're going on a wireless
basis or my name is not Marlin."

The forester was interrupted by a joyous bark and in rushed Charley's pup.
"You blessed little fellow," said Charley, fondling the animal. "I suppose
you lost our trail when we got into the motor-car and you probably hung
around the battery all day and followed our trail back here. That's pretty
good. You've got great stuff in you, pup. The next thing I teach you will
be to stand guard over things as you probably did over that battery
to-day."

Darkness fell. Supper was cooked and eaten. "Have you heard that cat
lately, Charley?" asked the forester.

"No," replied Charley, "but I think I'll put the traps out anyway."

"We can attract it even if it isn't near by," said the forester. "Have you
a can of salmon that you can spare?"

"Sure."

"Then give me the traps and bring your can."

Charley got the things asked for. The forester, taking the flash-light,
l