"It is most extraordinary," he said, "that just when a paymaster is anxious to keep secret the date and route of his coming the whole thing is heralded ahead. We have no telegraph, and yet three days ago we knew that Major Plummer was starting on his first trip. He ought to have been at Ceralvo's last night. By Jupiter! suppose he was—and had but a small escort? What else could that signal-fire mean? Here! get those men out to the front now at once; we must push ahead for all we're worth."
And so at midnight, with steeds panting and jaded, with the pass and the Picacho only four miles ahead, the little detachment was tripping noiselessly through the darkness, and, all alert and eager, Drummond was riding midway between his scouts and the main body so that no sound close at hand might distract his attention from hails or signals farther out. Suddenly he heard an exclamation ahead, the snort of a frightened horse, then some muffled objurgations, a rider urging a reluctant steed to approach some suspicious object, and, spurring his own spirited charger forward, Mr. Drummond came presently upon the corporal just dismounting in the darkness and striving to lead his boon companion, whom he could not drive, up to some dark object lying on the plain. This, too, failed. A low whistle, however, brought one of the other scouts trotting in to the rescue.
"Hold him a minute, Burke," said the corporal, handing up the reins. "There's something out here this brute shied at and I can't get him near it again." With that he pushed out to the front while the others listened expectant. A moment later a match was struck, and presently burned brightly in the black and breathless night. Then came the startled cry—
"My God! lieutenant. It's Corporal Donovan and his horse—both dead."
And even there Mr. Drummond noted that Bland was about the first of the column to come hurrying forward to the scene.
Ten minutes' investigation threw but little light upon the tragedy. Some stumps of candles were found in the saddle-bags and packs, and with these the men scoured the plain for signs. Spreading well out from the centre, they closely examined the sandy level. From the north came the trail of two cavalry horses, shod alike, both at the lope, both draggy and weary. From the point where lay Donovan and his steed there was but one horse-track. Whirling sharply around, the rider had sent his mount at thundering gallop back across the valley; then a hundred yards away, in long curve, had reined him to the southeast. The troopers who followed the hoof-marks out about an eighth of a mile declared that, unwounded, both horse and rider were making the best of their way towards Moreno's ranch. Farther search, not fifty yards to the front, revealed the fact that at the edge of a little depression and behind some cactus-bushes three human forms had been lying prone, and from this point probably had sped the deadly bullet.
"Apaches, by God!" muttered one of the men.
"Apaches, your grandmother!" was the sergeant's fierce reply. "Will you never learn sense, Moore? When did Apaches take to wearing store clothes and heeled boots? There's no Apache in this, lieutenant. Look here, sir, and here. Move out farther, some of you fellows, and see where they hid their horses. Corporal Donovan was with 'C' troop down the Gila last week, sir. They were to meet and escort the paymaster most like. It's my belief he was one of the guard, and that the ambulance has been jumped this very night. These are road agents, not Apaches, and God knows what's happened if they've got away with Patsy. Sure he was one of the nerviest men in the whole troop, sir."
Drummond listened, every nerve a-tingle, even while with hurried hands he cut open the shirt at the brawny throat and felt for fluttering heart-beat or faintest sign of life. Useless. The shot-hole under the left eye told plainly that the leaden missile had torn its way through the brain and that death must have been instantaneous. The soldier's arms and accoutrements, the horse's equipments, were gone. The bodies lay unmutilated. The story was plain. Separated in some way from the detachment, Donovan and his companion had probably sighted the signal blazing at the pass and come riding hard to reach the spot, when the unseen foe crouching across their path had suddenly fired the fatal shots. Now, where was the paymaster? Where the escort? Where the men who fed the signal-fire—the fire that long before midnight had died utterly away. Whither should the weary detachment direct its march? Ceralvo's lay a dozen miles off to the northwest, Moreno's perhaps eight or nine to the southeast. Why had the escaped trooper headed his fleeing steed in that direction? Had there been pursuit? Ay, ten minutes' search over the still and desolate plain revealed the fact that two horsemen lurking in a sand-pit or dry arroyo had pushed forth at top speed and ridden away full tilt across the desert, straight as the crow flies, towards Moreno's well. Even while Drummond, holding brief consultation with his sergeant, was deliberating whether to turn thither or to push for the signal-peak and learn what he could from the little squad of blue jackets there on duty, the matter was decided for him. Sudden and shrill there came the cry from the outskirts of the now dismounted troop clustered about the body of their comrade.
"Another fire, lieutenant! Look!—out here towards the Santa Maria."
The sergeant sprang to his feet, shouldering his burly way through the excited throng. One moment more and his voice was heard in louder, fiercer tones.
"No signal this time, sir. By God! they've fired Moreno's ranch!"
III.
Shortly after sunset on this same hot evening the sergeant in charge of the little signal-party at the Picacho came strolling forth from his tent puffing at a battered brier-root pipe. Southward and a few hundred feet below his perch the Yuma road came twisting through the pass, and then disappeared in the gathering darkness across the desert plain that stretched between them and the distant Santa Maria. Over to the east the loftiest crags of the Christobal were still faintly tinged by the last touch of departed day. Southward still, beyond the narrow and tortuous pass, the range rose high and precipitous, covered and fringed with black masses of cedar, stunted pine, and juniper. North of west, on the line of the now invisible road, and far out towards the Gila, a faint light was just twinkling. There lay Ceralvo's, and nowhere else, save where the embers of the cook fire still glowed in a deep crevice among the rocks, was there light of any kind to be seen. A lonely spot was this in which to spend one's days, yet the soldier in charge seemed in no wise oppressed with sense of isolation. It was his comrade, sitting moodily on a convenient rock, elbows on knees and chin deep buried in his brown and hairy hands, who seemed brooding over the desolation of his surroundings.
Watching him in silence a moment, a quiet smile of amusement on his lips, Sergeant Wing sauntered over and placed a friendly hand on the broad blue shoulder.
"Well, Pikey, are you wishing yourself back in Frisco?"
"I'm wishing myself in Tophet, sergeant; it may be hotter, but it isn't as lonely as this infernal hole."
"No, it's populous enough, probably," was the response, "and," added he, with a whimsical smile, "no doubt you've lots of friends there, Pike."
"Maybe I have, and maybe I haven't. At all events, I've none here. Why in thunder couldn't you let me look into that business over at Ceralvo's instead of Jackson?—he gets everything worth having. I'm shelved for his sake day after day."
"Couldn't send you, Pike, on any such quest as that. Those Greasers have sharp eyes, and one look at your face would convince them that we'd lost our grip or were in for a funeral. Jackson, now, rides in as blithe as a May morning—a May morning out of Arizona, I mean. They never get the best of him. The only trouble is he stays too long; he ought to be back here now."
"Humph! he'll be apt to come back in a hurry with Pat Donovan and those 'C' troop fellows spending their money like water at Ceralvo's."
"You