Henry paused, and the five black heads behind him paused with him. He raised his head a little from the water and studied the shore. A shape, bigger and darker than the others, told him where the flatboat lay. Owing to its greater draught, it was anchored in deeper water than the canoes, which was a fortunate thing for the daring adventurers. Henry saw the muzzles of the cannon, and a dark figure by each, evidently the warriors on guard. He could see them, but they could not see him and his comrades, whose heads were blurred with the darkness of the river. He turned on his side and whispered to Seth, who was next to him: "I think we'd better swim above the flatboat, keeping at a good distance, and then drop down between it and the bank. They will not be expecting an enemy from that side. What do you think of it, Seth?" Seth Cole nodded, and they swam silently up stream. If any one splashed the water it passed for the splash of a leaping fish, and there was no alarm in the Indian camp. Henry, studying the shore minutely as he swam with slow stroke, could not see motion anywhere. The fires burned low, and now that they were dropping down near the shore he saw the dim outlines of figures beside them. Some of the warriors slept in a sitting posture with their heads upon their knees, which were clasped in their arms, while others lay in their blankets. The canoes, in which Indians also slept, were tied to saplings on the bank. They swam now with the greatest slowness, barely making a stroke, drifting rather. Henry knew that not all the warriors on the bank were asleep. Sentinels stood somewhere among the trees, and it was hard to escape the vigilance of an Indian on watch. Only a night of unusual darkness made an approach such as theirs possible. A broad shape rose out of the obscurity. It was the flatboat, now not twenty feet away, and Henry paused a moment, the five heads pausing with him. "Nobody is watching on this side of the boat," whispered the youthful leader, "and it will not be hard to climb over the side. We must all do so at once and make a rush." "I'm thinkin' you're right," Seth Cole whispered back. They headed straight for the flatboat and each put a hand upon its side. A Miami sentinel on the bank heard a splash a little louder than usual, and he saw a gleam of white in the water beside the flatboat.