that they seemed to be almost as plain as print.

"Now, the rest of you just stay around while I take Jack and Bobolink
with me along this trail. We want to settle one thing, and that'll come
when we hit the place where this party got up on his feet to move off."

So saying, Paul himself got down and deliberately crawled under the
canvas the same way the trespasser had. Jack and Bobolink hastened to
follow his example, only too well pleased to be selected to accompany
the leader.

It was no great task to follow the marks made by the crawling man. His
toes had dug into the soil, going and coming, for apparently he had used
the same trail both ways.

"Here we are, boys; now, take a look!" said Paul, presently.

They were by this time in the midst of the timber with which this end of
the island was covered. Glimpses of the tents could be seen between the
trees; but any intruder might feel himself reasonably justified in rising
to his full height when he had made a point so well screened from
inquisitive eyes.

This man had done so, at any rate. The plain print of his shoes was
visible in a number of places. Both Jack and Bobolink gave utterance to
exclamations as soon as they saw these.

"One of the four, that's dead sure!" the former declared, positively.

"I'll be badgered if it ain't!" muttered Bobolink, staring at the tracks.