ahead with increased speed. The rails looked like two continuous streaks of light, and the timbers passed behind with such rapidity that they presented the appearance of a solid floor. So great was our speed that by the time I had thought of all this, and become so badly frightened that I would have tumbled over if my momentum had not kept me right side up, that low rumbling sound ceased as suddenly as it had begun, the graveled road-bed, trodden smooth in the middle, shot into view and came rushing under the wheels, two high bluffs came out of the darkness and shut us in on both sides, and the trestle and its terrors were left behind. At the same instant, as if by a preconcerted signal, a bright light appeared far up the track, which at this point was perfectly straight, and another still nearer. The first was from the head light of the approaching train, and the second was emitted by a lantern in the hands of a man who seemed to be searching for something, for he held his light first toward one rail and then toward the other. He was moving away from us.
"It's the track-walker," gasped Joe, as he
