He experienced a strange emotion—something defying analysis—that he could catalogue only uncertainly as loneliness. It was not fear—not strong enough for that. He wanted company; it was with a frown that he checked himself from going to bring his horse close in to his camp. That would have been childish.

He moved a little, sitting so that his back was against the tree.

CHAPTER III. FOOTPRINTS AND MONUMENTS.

It had been in the small hours of the night that Sheldon woke. The fire he had replenished before turning in was a mere bed of coals. He threw a log across it, and at last dozed. Again he was up and about with the first streaks of dawn. The sky was pearl-pink when he threw the diamond hitch and was ready to take up the trail again.

And now, calm-thoughted with the light of day, he hesitated. Should he go on? Or should he turn back?

As though for an answer, he went to the crossing where the scattered bones lay close to the water. And the answer to his question came to him, presenting him a fresh riddle. If he had stared wonderingly when he came upon the skull at the cliffs back yonder, now did he stare stupefied. There came a vague, misty fear that he was growing fanciful, that he was seeing things which did not exist. He got down on his knees, his face not two feet from the track in the sandy margin of the creek.

Something had passed there last night; the track was very fresh. Whatever it was that had wakened him had crossed here. And what was it? He sought to be certain; he must be conservative. The track was imperfect; the lapping of the water broke down the little ridges of sand the passing foot had pushed up; the imprint would be gone entirely in a few hours. And there was no other here, for the grass came close down to the water.

He looked quickly across the stream. There there was a little strip of wet soil. The water boiling unheeded about his boots, he strode across. Despite the man’s quiet nerves, his heart was beating like mad. For he saw that there was a track here, fresh, made last night. And another. Now he did not need to go down on his knees. The imprints were clearly outlined, as definite as though drawn upon a sheet of paper.

And they were the tracks of a bare, human foot.

If it had been the big track of a big man, Sheldon’s heart would not have hammered so. But it was the track that might have marked the passing here of a boy of ten or twelve—or of a girl!