“What is wanted, sergeant?” he quickly hailed. “Open, quick!” was the low-toned answer. “Come to the door. No, no, bring no light,” was the breathless caution, as he struck a match. “Who is this?” he demanded, with strange thrill at heart--something in those tones he well knew--yet it could not be. A dim figure in shrouding _serape_ was crouching at the front tent pole as he threw open the flap. “Good God! Isabel!” “Si---- Yes. Hush, senor, no one must hear, no one must know 'twas I. Quick! Wake your men! Saddle! Ride hard till you catch the paymaster! Never leave him till you are beyond Canyon del Muerto, and then never come to the rancho again--never!” [Illustration: 5039] SECOND CHAPTER [Illustration: 0040] [Illustration: 9040] HAT off mule of the paymaster's ambulance been a quadruped of wonderful recuperative powers. She had gone nearly dead lame all the previous day, and now at 5 o'clock on this breezy morning was trotting along as though she had never known a twinge in her life. Mr. Staines was apparently nonplussed. Acting on his advice, the paymaster had decided to break camp soon after 2 o'clock, make coffee, and then start for Rawlins' camp at once. He confidently expected to have to drag along at a slow walk, and his idea was to get well through the Canyon del Muerto before the heat of the day. The unexpected recovery of Jenny, however, enabled them to go bowling ahead over the level flat, and at sunrise they were already in sight of the northern entrance to the gorge. It was odd how early Mr. Staines began to develop lively interest in the condition of that mule. First he suggested to the driver that he was going too fast, and would bring on that lameness again; but the driver replied that it was Jenny herself who was doing most of the pulling. Then Staines became fearful lest the cavalry escort should get exhausted by such steady trotting, and ventured to say to Major Sherrick that they ought to rein up on their account. Sherrick was eager to push ahead, and, like most other men not to the manner born, never for a moment thought of such a thing as a horse's getting used up by simply carrying a man-at-arms six hours at ceaseless trot or lope. However, he knew that Staines was far more experienced in such matters than he, and so could not disregard his advice. [Illustration: 8041] “How is it, sergeant, are we going too fast for you?” he asked. “Not a bit of it, sir,” was the cheery answer. “We're glad enough to go lively now and rest all day in the shade.” “You see how it is, Staines; they don't want to slack up speed. We'll get to Rawlins' in time for breakfast at this rate,” and again Staines was silent. Presently the team began the ascent of a rolling wave of foothill, around which the roadway twisted as only Arizona roadways can, and at the crest the driver reined in to give his mules a “breather.” Staines leaped from the ambulance for a stretch. The troopers promptly dismounted and loosened saddle girths.