I lost no time, but ran down the slope smartly and carelessly. My way lay over loose shale mingled with large stones, and it was steep. It is wonderful how quickly an accident happens; how swiftly a thing that cannot be undone is done, and we are left wishing--oh, so vainly--that we could put the world, and all things in it, back by a few seconds. I was checking myself near the bottom, when a big stone on which I stepped moved under me. The shale began to slip in a mass, and the stone to roll. It was all done in a moment. I stayed myself, that was easy enough, but the stone took two bounds, jumped sideways, struck the piece of board which was only resting lightly at either end, and before I could take it all in the little bridge plunged end first into the current, which swept it out of sight in an instant. He threw up his hands in affright, for he had turned, and we both saw it happen. He made indeed as if he would try to save it, but that was impossible; and then, while I cowered in dismay, he waved his arm to me in the direction of home--again and again. The roar of the falls drowned what he said, but I guessed his meaning. I could not help him myself, but I could fetch help. It was three miles to Breistolen, rough, rocky ones, and I doubted whether he could keep his cramped position with that noise deafening him, and the endless whirling stream before his eyes, while I was going and coming. But there was no better way I could think of; and even as I wavered, he signalled to me again imperatively. For an instant everything seemed to go round with me, but it was not the time for that yet, and I tried to collect myself, and harden my heart. Up the bank I went steadily, and once at the top set off at a run homewards.