He was invariably unsuccessful; and, after anxiously gazing for several minutes, would return, and talk in low tones to his companions.

Then several would start up together and peer over the north-western plain; then, muttering anxiously, would return and lie down again, talking earnestly; something was wrong.

Even the cook, who was generally too hard at work, tired and surly to pay attention to any thing outside of his “Dutch-oven,” would now and then pause and look anxiously toward the north-west; it was plain something was wrong.

It was twilight on the vast plain, north of the Gila. Now the two principal parties had visibly changed their positions. The Indians were quite near, having gained two miles in light—a vast gain; they must have ridden like the wind, or the sorrel mustang must have lagged.

The last was the case. From some hidden reason Dimple had lost his swift run, and was going at a faltering canter—he was unaccountably fatigued or injured. She could hear faintly the hideous yells behind—a mile and a half distant.

At this, with her last hope giving way, she plied the whip.

The mustang obeyed, and for a few lengths galloped briskly, but soon collapsed, and feebly cantered on. She felt terrified at the thought of captivity and prayed for rescue.

It came. The twilight was almost over, then pitchy darkness would shield her from her red enemies. The moon rose about three hours after sundown—she could easily elude them until that time; then, perhaps, she would be safe.

Another circumstance, far more potent, was in her favor. The soil of the plain, baked hard after months of drought, left no impression of the mustang’s hoof, consequently she could not be traced by the hoof-marks. It was not probable, after having eluded them, that in this wide, vast plain they could chance upon her again. So, if she succeeded in escaping, for the present she was in comparative safety.

She succeeded. The darkness swiftly gathered down over the plain; she lost sight of her pursuers, though still hearing their hideous yells; and they, in turn, lost sight of her.