“I think so.”

“Well, if you can you’re a good one at it.”

At this point the forest was very dense and the going rough. Bob had nothing but his sense of direction to guide him, and it must be confessed, he was a little worried for fear he might go astray.

Twice he stopped and climbed a tall tree to make sure that he was on the right track.

“Sure you’re right?” the Captain asked as he jumped to the ground the last time.

“Pretty sure, sir. I think we’ll hit the border line in about a half a mile and then it’ll be clear sailing so far as getting lost is concerned.”

“We’re all right now,” he declared a little later. “Here’s the place where we saw, or thought we saw, that cabin.”

“It don’t look as though there had ever been a cabin here,” the Captain said as he glanced around.

“I know it and that’s the queer part of it.”

A little farther on they stopped for dinner and while one of the men was getting the meal ready, Bob, at the Captain’s request, told the others all about the vanishing cabins.