Andy's face brightened when he saw it and knew that he was on her trail.

The rest of the way down the canyon he rode alertly, for though he knew she might be miles from there by now, to find the route she had taken into the Badlands was something gained.
The flat, which Andy knew very well--having driven the bunch of cattle whose footprints had so elated Miss Allen--he crossed uneasily.

There were so many outlets to this rich little valley.

He tried several of them, which took time; and always when he came to soft earth and saw no track of the hoof that turned in toward the other, he would go back and ride into another gulch.

And when you are told that these were many, and that much of the ground was rocky, and some was covered with a thick mat of grass, you will not be surprised that when Andy finally took up her trail in the canyon farthest to the right, it was well towards noon.