The oars creaked with the sudden strain thrown on them. On came the tree, but, just as it was about to strike the boat, it checked and turned half over, as the projecting stump of a broken bough caught on the ground below. For an instant, only, the tree halted and began to swing. The halt gave a moment's respite, one more chance for an extra pull with the oars. The big log, thus poised, made a backwater eddy on the surface of the river, checking the force of the current. Ross reached back for another stroke, with every ounce of his muscle behind it. The tree turned over sullenly and charged down the river anew. Yet that brief pause, that second of delay, that back-water ripple as the log hung in suspension, had given Ross just the advantage that was needed. The branches of the upper part of the tree swept round, one of them catching the stern of the boat and almost pulling it under. Peril had been near, but victory was nearer. The bow of the boat touched the wall of the house. The current, swirling around the rocking walls, carried the boat to the lee of the house, and, as it spun round, Ross leaped on to the porch, chest-deep in water, and took a quick turn with the boat's painter around the corner post of the porch. The torrent took his feet from under him, and swept him down-stream, floating, but Ross held a firm grip on the rope and dragged himself back. There, clasping the post tightly, he got back his breath. After a moment's groping he found the railing of the porch. By standing on this and holding fast to the corner post, he was, for the moment, out of danger. He had reached the house, but how was Anton to be rescued? The crippled boy was on the second story and the upper window could not be reached from the boat, even if the boat could have been held in place directly under it. Fortunately, Ross knew the arrangements of his chum's house as well as he did those of his own. Stepping gingerly along the porch railing, he came close to the window of the sitting room. The glass was still in the window frame, but as the front door was swinging wide open, though partly choked with debris, Ross knew that the sitting room must be full of water. He kicked the glass out and then, with a heavier kick, broke away the middle part of the window-sash. The water did not come quite to the top of the window frame, sure evidence that there was room for air between the water and the ceiling. Taking a long breath, but with his heart knocking against his ribs, Ross dived through the broken window. It is one thing to be able to swim and dive, it is another to plunge through a splintered window-frame into a dark house in the middle of the night, with a flood roaring on all sides. Was the door into the hall open? On that, success depended.