Since both the boys knew the exact location of the camp, their task was just so much the easier, and they crept cautiously along in a straight line, but keeping a close watch ahead lest Bob should suddenly appear.

Half an hour after landing they were where the shanty could be seen clearly; but its occupant was not in it.

Jet had begun to fear he might have circled around the island merely for the sake of walking, and would come up in their rear; but this cause for alarm was soon found to be groundless.

Jim espied the man lying under the shade of some trees, where he could have a full view of any who might pass, and pointed him out to Jet.

There was no chance to creep upon him as in the case of the other fellow, for he was unmistakably awake and on the alert.

"We shall have to wait until he changes his position," the boy whispered. "It won't do to tackle him yet a while."

Jim breathed more freely.

Any respite, however brief, was a great relief.

When ten minutes had passed, and there was no change in the position of affairs, Jet said:

"I'm going to creep around the hut, and try to get through the back. The guns are probably there, and it will be a big thing if we get hold of them."