"It may be the younker is asleep, or, if he hears me, he may take me fur Motoza; and yet that couldn't be, for our voices don't sound alike."

Once more he produced his rubber safe and struck a match, holding the twinkling flame above his head as he slowly moved forward into the cavern. Before the light expired he had another, for he intended to make his search thorough.

The opening in the side of the canyon had a width of ten or twelve feet, was of the same height, and extended back for more than double the distance. Side, floor and roof were of irregular formation, and the craggy stones rough and wet. Had there been any gleaming stalactites or stalagmites in sight, the cause of the legend attaching to the place would have been understood, but there was nothing of that nature. The cavern was simply a rent in the side of the canyon wall, created by some convulsion of nature, and all that was visible was damp limestone.

By the time the visitor had burned three matches his examination of the place was completed and he had made the discovery that he was the only occupant. Fred Greenwood was not there, nor did the cavern show signs of having been visited by person or animal.

But hold! When Hank threw down the last expiring match, he caught a glimpse of something white on the flinty floor. He had not thought of looking for anything, and it was the accidental following of the match with his gaze that revealed the object. Instantly another match was sending out its feeble rays, and he stooped down and picked up that which had arrested his attention.

It was a piece of paper, apparently the blank leaf of a letter. There was no writing or mark on it to indicate its ownership, but had it been the visiting-card of Fred Greenwood, Hank Hazletine could not have been more positive that it belonged to the young man.

It was impossible that Motoza should carry writing-paper with him. The cowman never did so, consequently he could not have dropped it on his late visit. It was equally improbable that Bill Tozer had anything to do with it. He knew that both of the boys had paper and pencils with them, for he had seen them figuring over some problems they were discussing, and with a thrill of conviction he remembered that the paper they used was of precisely the same pattern as the piece he held in his hand.

"The younker has been here, but what the mischief has become of him?" and the mystified cowman looked right and left, on the floor and at the roof, as if he suspected the youth was hiding in one of those places.

An explanation suggested itself. After taking the lad to the cavern, his captor from some cause had changed his mind and transferred him to another place of confinement.

No; there was another theory which would explain the mystery: it was that Motoza, yielding to his implacable enmity of the youth, had placed him beyond all reach of his friends. The spirit of revenge with an American Indian is tenfold stronger than cupidity. It was not improbable that the miscreant, having committed the unspeakable crime, was concealing it from Tozer, his ally in the dreadful business.