"
While Mr. Morton held the lantern for them, the two boys studied the
burned ball of clay. On it were a number of distinct thumb-prints, now
turned into solid brick by the action of the fire. The boys looked at each
other questioningly and then at Mr. Morton.
"It's a clever rogue who doesn't trip himself up somewhere," chuckled the
ranger. "What happened is as clear as daylight. Collins and his companion
found this clay while they were inspecting your camp. They must have
suspected that it was fire-clay and that you had found a deposit of value.
They took some along to test, and rolled what was left into a ball again,
thinking you would never notice the difference. But they forgot that clay
would take finger-prints so readily, and they have left their calling
cards behind them."
The ranger carefully wrapped the clay ball in his handkerchief, and then
in a newspaper. "Let me have this," he said. "The police may have some
duplicate prints somewhere. We don't know what Collins and his pal are up
to, but we have something here that we may find very useful. It isn't
every crook that is so considerate as to leave his thumb-prints behind
him."
Chapter XVI
Good News For the Fire Patrol
As the ranger had foretold, the forest guards did indeed pull foot early
in the morning. Black darkness still enfolded the camp when the ranger
awoke his young companions. Fire was speedily kindled and breakfast gotten
under way.
"Better eat your meat, boys," suggested the ranger. "Otherwise it will
keep that cat hanging around here. We'll hardly dare to leave the pup
behind again, and that beast might get in here and tear your tent to
pieces. These cats play hob with things sometimes."
Lew decided that he would carry nothing back with him, as he contemplated
visiting his chum at intervals.
"Just take your rifle," said the ranger to Charley. "You'll be all alone
on your return trip and with two such animals as we've seen hereabout, it
will be just as well to have it. If I were you, I believe I'd make a
pretty close companion of it and always keep it within reach."
When they left the camp, they were burdened only with Charley's rifle and
food for the noon meal, which they stowed in their pockets. The instant
there was light enough to guide their footsteps, the trio set forth.
For hours they trudged through the forest, for the most part in silence.
Although they traveled by a circuitous route, and with eyes and ea
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