They headed for the boulder beach, where they landed the half-breed. He made a line fast to the craft and went up-stream with the end of it, while Carnally thrust the canoe out and, with Andrew's help, forced her up against the current, aided by the line. It was arduous work. The foam stood high about the bows; eddies swirling up from the rough bottom swung them to and fro and, although they strained every muscle, now and then brought them to a standstill. Angry waves broke on board freely, and Andrew realized that if Lucien lost his footing or slackened his efforts the line would be torn from him and they would be swept back to the tail of the pool. This, however, would be better than being sucked into the cataract close outshore, which would no doubt result in the canoe's capsizing. At last they reached a spot where they must stem the main rush, which swung in nearer the bank. "Can we get through there?" Andrew asked breathlessly. "I'll try," said Carnally. "If we fail, I guess you'll have to swim." Andrew said nothing, but the swollen veins rose on his forehead as he strained upon his pole. Frothing water broke into the canoe; Lucien was knee-deep in the foam, braced tensely against the drag of the line. Spray lashed their hot faces, and the air was filled with the roar of the torrent. For nearly a minute they hung stationary, their strength taxed to the utmost, the pole-shoes gripping the bottom. Then they moved a foot or two, and the work was a little easier when they next dipped the poles. They made a few yards. With a cry to the half-breed, Carnally loosed the line, and they shot forward up-stream with a back-eddy. It swirled about them in curious green upheavals, streaked with lines of foam, and they sped with it past boulder and shingle at a furious pace. This was exhilarating; but when steep rocks dropped to the water Andrew glanced anxiously toward the white confusion where the eddy reunited with the downward stream. Its descent was not to be thought of, but he could see no alternative except being dashed against the crag. Carnally, however, did not seem disturbed. He knelt in the stern, his eyes fixed ahead, quietly dipping the steering paddle, for they had laid down the poles. "Use all your strength when I give the word," he said. They slid on, a tall, projecting spur of rock drawing nearer, with furious waves leaping down-stream a yard or two outshore of it. It seemed to Andrew that destruction surely awaited them. The turmoil grew closer, the rock was only a yard or two away; in another few moments the bow of the canoe would plunge into the tumbling foam. Then came a cry from Carnally: "Now, with your right! Shoot her in!"