Dick sauntered easily along in the direction indicated by the two footprints. As they entered the patch of low bushes both boys noted the fact that the ground had been slightly disturbed, as it might have been by the sliding of a human body over it. Dick, whose eyes were keener, easily followed the marks on the ground. Indeed, he did so without appearing to pay much heed to the earth under his feet. Then the trailers passed three trees, behind which the escaping man might have found good cover. A hundred yards further on Dave and Dick entered the edge of a grove of trees. Here there were also several rather thick tangles of brush and bush. Well inside of one clump Dave, with a start, fancied he saw something that looked like a wall woven of green leaves. But Dick was trudging on ahead. Prescott continued in the lead for another quarter of a mile before he turned. "You passed the one real sign," murmured Darry at last. "I know I did," agreed Dick, "and we're going back wide of that place. You mean the jungle where you saw a bit of what looked like the brush-woven wall of a bush hut?" "Yes," assented Darrin. "It's a well-hidden place," declared Dick, "and I don't so much wonder that we didn't find it before. But now we'll go back to camp." "And what next?" "I don't know," Prescott confessed, looking puzzled. "We really haven't any right to pounce on the man unless we catch him doing something. Anyone has a right to lead the wild life in the woods, unless he's a criminal or a lunatic." "My vote is that our chap is a lunatic," suggested Darry. "If he is, then he's a harmless one, anyway. Let's go back, by a roundabout way, and tell the fellows." "There are four pin-heads in this camp," was Tom Reade's decision, when he heard the report brought back by the others. "Only two of us have brains enough to see anything that's written right on the face of the earth." "But what are we going to do about our man?" asked Greg. "That's what we must figure out," Dick replied. "I don't see that we can do anything except send word to the authorities down in the village, and let them act as they see fit." "What authorities are there in the village?" Dave inquired. "I don't know. That we'll have to find out. We-----" Dick paused suddenly, listening keenly. "Do you fellows hear that?" he whispered. "I hear a rumble of wheels off in the distance," replied Greg. "The air is so wonderfully still that sound carries a long way this evening." Dick ran into the tent, returning with an envelope and a pad of paper. "Come along, Dave," Dick requested. "And you'd better bring Tom's flashlight. It will be dark before we get back." The battery of the flashlight having had a good rest, now furnished an excellent light again. As the two chums set off at a trot Greg inquired: "Now what are that pair up to?" "Being one of the four pin-heads belonging to this outfit," Tom made solemn reply, "I can only guess."