"Well, it does look kind of queer," admitted Steve, "but mebbe that's just because of the shack being abandoned so long. The weeds and grass and bushes have grown right up to the walls; and looky there, the roof even seems to be green, like grass had took root there. She is a dandy-lookin' roost, sure as you're born, Toby."

All of them stared at the odd little affair. Cabins they had seen before now, by scores, some fairly commodious, others small and limited in accommodations, bat never one that looked like this shack on Catamount Island.

"Anybody around, that you can see, Max?" asked Owen, presently, when they had been standing there in that group, watching the green-roofed cabin, and the vegetation-covered walls of the low, squat cabin, for some time.

"Well, if there is, I haven't had a squint of 'em," Steve took occasion to remark, before the one addressed could reply.

"S-s-somebody g-g-give 'em a hail!" said Toby, sensibly.

So Max immediately called out:

"Hello there!"

No response followed. Although the five boys watched eagerly to see if any figure that might correspond with the queer cabin came out of the partly opened door, nothing happened.

"Cabin, ahoy!" sang out Steve, in a very loud, gruff voice, that surely merited some attention, if so be there chanced to be any one at home.

He met with no better success than had attended the salute of Max. The boys exchanged glances, and nodded, as if their minds were made up.