Bildad, from the warmth of the rugs, watched these proceedings with a look of mute wonder on his dusky features. As soon as the raft was ready the baggage was placed on it. "Take the canoe along," said Forbes. "It is too badly shattered by the fall to use, but it will furnish us with torches and firewood." There was room to spare, so the boat was placed on one end of the raft, and then sitting on the sand they made a hearty meal of crackers and figs. "I don't admire the appearance of that river very much," remarked the colonel. "It comes through the cliff as though shot by a cannon. No wonder, though, when you think of the terrible pressure from above." "We will make up for lost time by rapid traveling, then," said Forbes. "Ah, you think so?" cried Sir Arthur. "Bless me, I hope we will. I have an engagement to dine with Lord Balsover at the Hotel Bombay at Aden on the 10th at six o'clock in the evening. He touches there on his way to India, and I can't disappoint him, you know." "Drop him a few lines, Ashby, and postpone the engagement a couple of weeks," remarked the colonel dryly. "Bless me! Can I do that?" ejaculated Sir Arthur. The laugh that followed was cut short by Guy's short, decisive voice: "Get ready, it's time to start." The raft lay partly in the water, and with a hearty shove from all it was pushed clear of the shore. Forbes and Canaris held it while it tossed up an down in the swirling eddies. "Get on board," directed Guy, setting the example himself, and assisting Bildad. Forbes remained on shore, holding the corner of the raft till all had passed on board. It trembled fiercely in his grasp, as though eager to be off on the journey. Far overhead the abandoned torch was glowing dimly on the summit of the cliff, a patch of brightness that made the gloom round about all the blacker by contrast. For the first time a sudden realization of the unknown perils that lay before them flashed into the minds of the little party. "Let go, Forbes," said Guy in a firm voice. Melton sprang nimbly on board and grasped a paddle. The raft quivered a moment and then shot, swift as an arrow, toward the turbulent stretch of water beyond. Then came a tremendous lurch, a riotous dash of spray that took away their breath, and with a dizzy speed that was simply indescribable the trembling craft was whirled down the torrent. The first sensation was one of uncontrollable fear, and they hung with all their might to the logs, expecting every instant to be tossed into the water. Round and round spun the raft in dizzy revolutions, until their heads were dizzy and aching. Then the harsh roar subsided, and in a little while the raft became quiet and rested on the surface of the water with hardly a quiver. And now they ventured to sit up. They appeared to be moving with the velocity of a railroad train. On both sides, a few yards from the raft, smooth walls of rock were visible. Overhead was empty space.