It led him along a wooded ledge of naked rock, and down across a marshy flat place where a brook widened and lost itself in a dense hedge of rushes. He crossed on a series of flat stones, and ascended a little hill. One look, and he gave a shout of surprise.

There, spread before him beyond the margin of the reeds, was a long flat sheet of water, a mountain tarn whose unruffled surface, like a plate of polished steel, gave off the last dying beams of sunset. He had come too far to the south; he was off the course he had laid for Newmiln Center. This must be Black Pond, the long body of water he had seen marked on the map in the camp lodge.

The pond, hidden among the rocks and dark trees of the mountain, at no time had a friendly look; now, at nightfall, it presented to the weary boy a face full of sinister threat. He was several miles out of his way; further progress that night was impossible. He would have to camp here on Black Pond.

He was just turning away to locate a camping place, when his eye was caught by something which he had not noticed in his brief survey of the pond and its surroundings. Through the trees to the right a thin wisp of smoke was curling up in a languid spiral.

Someone was camping beside the pond! Blackie did not hesitate; the fear of spending the night alone offered no choice. He ran to the end of the path. There, beside the still waters of Black Pond, was a small shack rudely knocked together from rough pine slabs and chinked with moss. The spreading wings and steel-edged talons of a hawk, shot at some time or another, were nailed to the wall near the low door, in the usual back-country fashion. The smoke of a fire came from a stone chimney at one end. A small rowboat with a puddle in the bottom was drawn up on the muddy shore.

Blackie paused for a moment. He didn’t like the looks of the place, but beggars can’t be choosers; it was now quite dark, and the smoke indicated a cheery fire inside. Some hunter or fisherman, who used this small hut for his camp, must be inside. Blackie tiptoed to the door and knocked hesitantly.

From beyond the rough barrier came a startled grunt, the sound of a body moving swiftly across the hut. Blackie knocked again, growing more and more concerned as the silence continued.

With a sudden jerk the door was flung open, and a man’s figure appeared outlined in the firelight, with one arm menacingly upraised, wielding what seemed to be a short iron bar. Blackie Thorne stared, and gave a shrill scream of fright.

He was looking in the face of the man called Reno, one of the two tramps he had overheard on the night of the snipe hunt planning to rob old Rattlesnake Joe of his imaginary treasure! He could plainly see the seamed face, the gray unshaven jowls, and the green eye-patch of that sinister character.

The tramp was as surprised as the boy. “In the devil’s name, it’s a kid!” he bellowed. “A kid, Lew! Nab ’im, quick!” He made a dive for Blackie, but the boy, pulled by terror, had already taken to his legs back up the path—away, away from that evil face in the hut. He stumbled frantically through the dark—the further away from Black Pond, the better! Behind him he could hear the baffled howling of Reno. He would escape yet——