both Scouts. The game was on.

CHAPTER IV

"HELP!"

Every member of the Blue Tortoise Patrol was on edge, eager to show Pat
that though they were city born and bred they still knew something of
practical woodcraft and the art of tracking; also of the even more
difficult art of covering up tracks. But it was ordained that things
should be otherwise that day and that the big woodsman should witness a
real and not an artificial test of Scout resources and pluck.

Chick, studying what struck him as a suspiciously broad trail leading
west from the point where the enemy had last been seen, and suspecting a
ruse, was startled by the faint sound of a whistle to the north. It was
the patrol signal for help and was used only in case of an emergency or
when, as in the present game, a Scout was in danger of capture by the
opposite side and wanted to summon aid. His first thought was that one
of his own side had run onto the enemy and was summoning help. Then he
remembered that he was the only one who had gone out on that side of
camp and so it was manifestly impossible that this could be.

"Wonder if that's a trick to lead us into an ambuscade," he muttered,
listening with growing suspicion. Again he heard the signal, and there
was something in the sound of it that banished all idea of trickery.
"Something's happened to one of the fellows!" he exclaimed, and
scrambled up a knoll to his left where he could get a fairly clear view.
Far in the distance toward the outer boundary of the park he saw a
figure which the instant he came in sight began to signal with a whistle
in the Morse code.

"M-o-t-o-r s-m-a-s-h o-n r-o-a-d h-e-l-p c-o-p-s," he spelled out.
Raising his own whistle he signaled O. K. and saw the distant figure
turn and race away at top speed.

"Phew!" he gasped. "Must be bad if they need the cops. That must mean
they need an ambulance." He whirled toward camp, and caught sight, of a
figure on the hill just back of it. It was Upton watching for signals,
and Chick knew that he must have heard him whistle the O. K. Once more
raising the whistle he repeated the message, adding the location of the
accident as nearly as he could judge. He heard Upton whistle for Norwood
and then saw him bound down into the hollow where the camp lay. A minute
later Patterson, the best runner in the patrol, sprang into view headed
for the park administration buildings at top speed. Satisfied that help
would come in the shortest po