Returning, he carefully obliterated all traces of the camp. He watered the ashes of the fire, gathered up the tell-tale scraps of paper and fragments of food, and then when the place suited him fell to examining his rifle. Alaire watched him with interest. "Where shall I go," she asked, "and what shall I do?" "You just pick out a good cover beyond the water-hole and stay there, ma'am. It may be a long wait, for something may have happened. If so we'll have to lie close. And don't worry yourself none, ma'am; he won't make no trouble." The afternoon drew to a close. Gradually the blinding white glare of the sun lessened and yellowed, the shadow of the bluffs began to stretch out. The shallow pool lay silent, deserted save for furtive little shapes that darted nervously out of the leaves, or for winged visitors that dropped out of the air. With the sunset there came the sound of hoofs upon loose stones, branches rustled against breasting bodies, and Mrs. Austin cowered low in her hiding-place. But it was only the advance-guard of a bunch of brush cattle coming to water. They paused at a distance, and nothing except their thirst finally overcame their suspicions. One by one they drifted into sight, drank warily at the remotest edge of the tanque, then, alarmed at some imaginary sight or sound, went clattering up the ravine. Once again the water-hole lay sleeping. Alaire's retreat was far from comfortable; there was an ants' nest somewhere near her and she thought of moving; but suddenly her breath caught and her heart jumped uncontrollably. She crouched lower, for directly opposite her position, and outlined against the sky where the sharp ridge cut it, was the figure of a mounted man. Rider and horse were silhouetted against the pearl-gray heaven like an equestrian statue. How long they had been there Alaire had no faintest notion. Perhaps it was their coming which had alarmed the cattle. She was conscious that a keen and hostile pair of eyes was searching the coverts surrounding the charco. Then, as silently as it had appeared, the apparition vanished beyond the ridge, and Alaire wondered if the rider had taken alarm. She earnestly hoped so; this breathless vigil was getting on her nerves, and the sight of that threatening figure had set her pulses to throbbing. The rider was on his guard, that was plain; he was armed, too, and probably desperate. The ominous possibilities of this ambush struck her forcibly.