"That way," said Roy.

"Come on then. Let's cover as many miles as we can while daylight lasts. We'll have to touch a match to our lamps pretty soon."

It was fine wheeling on the hard road-bed, and Joe Wayring made the pace hot enough to satisfy anybody but a professional racer; but fast as he went, the darkness traveled faster, and when they had gone about three miles, he suggested that the lamps ought to be lighted.

"These thick woods and high banks on each side shut out what little light there is," said he, "and it is darker where we are than it ought to be. We have never been this way before, and no one knows how soon we may blunder into a cattle-guard and get a broken head without a chance to see what hurt us."

Another start at a more moderate pace was made as soon as the lamps had been lit, and by the time the fourth mile had been left behind, it was as dark as a pocket. This was a new experience, and the boys did not like it. Although they had often seen wheelmen running about the streets when it was so dark they could not tell where they were going, Joe and his chums had never tried to do it themselves, because they did not like to trust so much to luck. A small stone or a stick which some careless boy had left in the track might send them to the ground, and my master was not fond of taking headers. Thus far he and his friends had been very fortunate in avoiding any very serious falls, and they did not care to run any risk of spoiling their record. But Joe came within a hair's breadth of scoring a bad fall on this particular night. Although he thought he was paying especial attention to the road close in front of him, he was really paying more to the rippling of a brook that flowed through a yawning gulf on his right hand, and at the same time he was keeping a bright lookout for a locomotive headlight.

"That's an awful pokerish place over in there," Arthur remarked, jerking his head sideways toward the ravine of which I have spoken, "and the railroad seems to have been built on the very brink of it. Why didn't the engineers cut out more of the hill on the opposite side and put it farther—eh?"

A warning shout from Joe Wayring cut short Arthur's criticism, and brought him and Roy to a sudden halt. There was a rock lying on the track, and it was so large that it covered the rails on both sides. Then followed that hurried consultation which I have recorded at the beginning of my story. While it was going on Joe, with the aid of his lamp, examined the face of the bluff, and could distinctly trace the path made by the bowlder when it rolled down from the top, and the others took a good look at the rock itself. Two things were plain to them: The rock was on the track, and they could not muster force enough to get it off. The first train that came along would find it there, as well as a gulf of unknown depth ready to receive all the cars that were tumbled into it.

"Suppose it should be a passenger train?" gasped Roy.