Back in the thick of the willows she had left her pony, blinking lazily and switching his long tail to rid his flanks of humming insects, but never mustering energy enough to stamp a hoof or strain a thread of his horsehair _riata_. Both the long, lean, sprawling hounds lolled their red, dripping tongues and panted in the sullen heat. Even the girl herself, nervous at first and switching with her dainty whip at the crumbling sands and pacing restlessly to and fro, had yielded gradually to the drooping influences of the hour and, seated on a rock, had buried her chin in the palm of her hand, and, with eyes no longer vagrant and searching, had drifted away into maiden dreamland. Full thirty minutes had she been there waiting for something, or somebody, and it, or he, had not appeared. Yet somebody else was there and close at hand. The shadow of the westward heights had gradually risen to the crest of the rocky cliffs across the stream. A soft, prolonged call of distant trumpet summoned homeward, for the coming night, the scattered herds and herd guards of the post, and, rising with a sigh of disappointment, the girl turned toward her now impatient pony when her ear caught the sound of a smothered hand-clap, and, whirling about in swift hope and surprise, her face once more darkened at sight of an Indian girl, Apache unquestionably, crouching in the leafy covert of the opposite willows and pointing silently down stream. For a moment, without love or fear in the eyes of either, the white girl and the brown gazed at each other across the intervening water mirror and spoke no word. Then, slowly, the former approached the brink, looked in the direction indicated by the little dingy index and saw nothing to warrant the recall. Moreover, she was annoyed to think that all this time, perhaps, the Indian girl had been lurking in that sheltering grove and stealthily watching her. Once more she turned away, this time with a toss of her head that sent the russet-brown tresses tumbling about her slim back and shoulders, and at once the hand-clap was repeated, low, but imperative, and Tonto, the biggest of the two big hounds, uplifted one ear and growled a challenge. "What do you want?" questioned the white girl, across the estranging waters. For answer the brown girl placed her left forefinger on her lips, and again distinctly pointed to a little clump of willows a dozen rods below, but on the westward side. "Do you mean--someone's coming?" queried the first. "Sh-sh-sh!" answered the second softly, then pointed again, and pointed eagerly.