“I do, indeed, Jack,” he said. “A cutthroat such as Lupo would have brought his band of desperadoes here for only one purpose, and that is, to dispose of us. We were lucky this time by reason of the fact that they came upon our camp first, and stopped to loot. But from now on we shall have to be continually on our guard.”

“It’s a good thing, Mr. Hampton, that this is the long Summer, when daylight never fails,” said Frank. “That makes it easier to guard against a surprise attack.”

“Yes,” Mr. Hampton agreed, “that makes it easier. But from now on, we shall have to be on the watch continually.”

He was silent a moment, thinking. Then he turned to the other members of the party, Farnum, Dick and Art being gathered about him as well as the boys, preparatory to the launching of the canoes, which were ready loaded.

“Are we making a mistake in letting these fellows out of sight?” he asked. “Would it be better to set Dick and Art to watch them, and appoint a rendezvous where we can come together later?”

The two Alaskans were silent. Their faces, however, showed approval of the plan. Farnum struck his forehead with clenched fist in a characteristic gesture.

“Just what I would have proposed myself, if I had been awake,” he confessed. “Dick, Art, do you think you could pick up their trail?”

The two nodded.

“They won’t back track far,” said Dick. “Art an’ me can follow ’em afoot. That last portage is only four miles back, an’ we can catch up with ’em there. Now about where to meet up with you again?”

“None of us know this country,” said Farnum, “and so it will be difficulty to appoint a rendezvous. But, look here. Lupo undoubtedly intends to continue our pursuit, and won’t let our trail go cold. Consequently, you will be near us. I think the best plan will be to report to us at every camp. One of you can keep watch on Lupo while the other brings in a report.”