A light jam had formed that morning at a place the drivers called a _tournant d'eau_, about a mile above. This was broken by getting a haul on it from the shore with a dog-warp. Thereby several thousand logs were liberated at once, and went down together into the rapids. The older drivers exclaimed that it would make mischief when it started; but nothing could be done; it broke and went out with a rush. We, who were ahead, ran on down the ledges to see it go through the falls, and we had to run fast to keep up. The instant the logs entered the rapids they left us behind. We could see them going down, however, end over end, and hear them "boom" against the sunken rocks. Turtlotte and a Welshman named Finfrock were ahead. I heard Turtlotte call out in French that the logs were jamming, and saw the butt ends of great sticks fly up, glittering, out of the water. The logs had struck and hung on one of the centre rocks, and on the shelving ledges upon the east side. The ends of three large sticks, three or four feet across, stood out fifteen feet or more. We ran on, clambering from crag to crag, till we came to a point looking down on the glut, sixty feet beneath; and that was about near enough, for the ends of the logs flew up almost on a level with our eyes, as they went over, and the spray drenched our faces. The ledges under our feet trembled as if an earthquake were shaking them, and not a word could be heard, even when shouted in the ear. The combined noises were louder than thunder, heavier, deeper. It was a warm forenoon, and the sun shone into the rock dazzlingly bright, making a vivid rainbow. It was the hottest, maddest chasm that can well be imagined; and to see that brilliant rainbow hanging there so still and motionless amidst all that uproar, gave one a queer sensation.