Henry gave the word and Paul steered the boat in the chosen course. The forest grew thinner, showing that they were approaching the true stream, but the fog held fast. After a hundred yards or so they stopped again, and then they distinctly heard the sound of paddles to their right. It was not a great splash, but they knew it well. Paul, at the tiller, fancied that he could see the faces of the savages bending over their paddles. They were eager, he knew, for their prey, and either chance or instinct had brought them through the white pall in the right course. The uncertainty, the fog, and the great mysterious river weighed upon Paul. He wished, for a moment, that the vapors might lift, and then they could fight their enemies face to face. He glanced at his own comrades and they had taken on an unearthly look. Their forms became gigantic and unreal in the white darkness. As Henry leaned forward to listen better his figure was distorted like that of a misshapen giant. "Steer straight toward the north, Paul," he whispered. "We must shake them off somehow or other." Silently the boat slid through the water but they heard again those signal cries, the hoots of the owl and now they were much nearer. "They must have guessed our course," whispered Henry, "or perhaps they have heard the splash of an oar now and then. Stop, boys, and let's see if we can hear their canoes." Their boat lay under the thick, spreading boughs of some oaks. Paul could see the branches and twigs showing overhead through the white fog like lace work, but everything else was invisible twenty feet away. All heard, however, now and then the faint splash, splash of paddles, perhaps a hundred yards distant. Henry tried to tell from the sounds how many war canoes might be in the party, and he hazarded a wild guess of twenty. As he listened, the splash grew a little louder. Obviously the canoes were keeping on the right course. Shif'less Sol wet his finger and held it up. When he took it down he whispered in some alarm to Henry: "The wind has begun to blow, an' it's shore to rise. It'll blow the fog away, an' we'll lay in plain sight o' all o' them savages." Henry's instinct for generalship rose at once and he saw a plan. "We must keep on for midstream," he said. "We know what direction that is, and, out in open water, we'd have one advantage even over their numbers. Theirs are only light canoes, while ours is a big strong boat that will shelter us from any bullet. Pull away, boys! I'll help Sol keep up the watch." The boat once more resumed its progress toward the main current. The wind, as Sol had predicted, rapidly grew stronger. The deep curtain of fog began to thin and lighten. Suddenly a canoe appeared through it and then a second.