But Harris had saluted and turned away, 'Tonio at his heels. As they passed the end of the veranda, where sat Lilian and her listener, Harris noted that the latter had drawn his chair much closer than he had dared, and was bending forward until the handsome dark head was almost over the fair hand toying with the guitar that lay idly in her lap. The modern vernacular for the successful squire of dames was then unknown. The girl, who had been leaning forward, all chat and animation when Harris sat there, now lay dreamily back in the rude but easy chair, her eyelids drooping, her long lashes sweeping the soft cheek, listening, drinking in the murmurous flow of Willett's almost inaudible words, and the stern young face of his classmate hardened in the moonlight, for Harris had seen and heard before. Briefly he gave his instructions to the silent Apache and closed with the sign, "I have spoken. That is all." But 'Tonio did not stir. Something, possibly, in Willett's devotional attitude vaguely troubled the girl, and, edging back in her chair, she had lifted a little slippered foot from the floor. The general at the moment was talking loud enough to drown other sounds about him. The aide-de-camp, his dark eyes glowing and riveted on those of the fair face so near him, seemed deaf to everything but his own eloquence. But the Indian had placed one hand on his young officer's wrist, and with the other stood pointing at some object coiled underneath Lilian's chair, not half an arm's length from the little foot that dangled in its silken stocking but a hand's-breadth from the floor. At that moment Willett bent impressively, still nearer, and instinctively Lilian moved a hand as though about to edge farther away. It was at this very instant that Harris spoke, his voice, absolutely calm, even to the semblance of a drawl, but every word told clear, distinct, and, in spite of its courtesy, commanding, compelling. "Miss Archer and--ah--Willett, be good enough to sit perfectly still a moment. Don't--move--a muscle!" Even the general, for a wonder, had ceased--for breath, perhaps--and sat speechless and startled, for noiseless and stealthy as a cat, with long strides, 'Tonio had skirted the edge of the veranda, and with agile spring was at the back of Lilian's chair. There he swooped instantly. There was sound of strident, rasping sk-r-r-r-rr: then a lightning snap, as of a whip. Something black and writhing went flying into the sand, and then squirming blindly away, and 'Tonio straightened to his full height, and without a word strode from the veranda. "In God's name, what was that?" cried the general, springing from his chair and hastening to his daughter's side. "Nothing but a snake, sir," said Harris quietly, strolling toward them. "_That_ one's done for, anyhow!" CHAPTER IV.