Through the woodland s.p.a.ces the sunlight sparkled with the inconceivable brilliance of the higher levels, as though the air were filled with glittering particles in suspension, like the mica snowstorms of the peep shows inside a child's candy egg.

They dipped into the canon of the creek and out again through the yellow pines of the other side. They skirted the edge of the ancient clearing for the almost prehistoric mill that had supplied early settlers with their lumber, and thence looked out through trees to the brown and shimmering plain lying far below.

"My, I'm glad I'm not there!" exclaimed Amy fervently; "I always say that," she added.

"A hundred and eleven day before yesterday, Jack Pollock says," remarked Bob.

So at last they gained the long ridge leading toward the mill and saw a hundred feet away the mill road, and the forks where their own wagon trail joined it.

At this point they again entered the forest, screened by young growth and a thicket of alders.

"Look there," Amy pointed out. "See that dogwood, up by the yellow pine.

It's the most splendiferous we've seen yet. Wait a minute. I'm going to get a branch of it for Mr. Welton's office. I don't believe anybody ever picks anything for him."

"Let me--" began Bob; but she was already gone, calling back over her shoulder.

"No; this is my treat!"

The men stopped in the wagon trail to wait for her. Bob watched with distinct pleasure her lithe, active figure making its way through the tangle of underbrush, finally emerging into the clear and climbing with swift, sure movements to the little elevation on which grew the beautiful, pink-leaved dogwoods. She turned when she had gained the level of the yellow pine, to wave her hand at her companions. Even at the distance, Bob could make out the flush of her cheeks and divine the delighted sparkle of her eyes.

But as she turned, her gesture was arrested in midair, and almost instantly she uttered a piercing scream. Bob had time to take a half step forward. Then a heavy blow on the back of his neck threw him forward. He stumbled and fell on his face. As he left his feet, the crash of two revolver shots in quick succession rang in his ears.

x.x.xIII

Oldham's cold rage carried him to the railroad and into his berth. Then, with the regular beat and throb of the carwheels over the sleepers, other considerations forced themselves upon him. Consequences demanded recognition.

The land agent had not for many years permitted himself to act on impulse. Therefore this one lapse from habit alarmed him vaguely by the mere fact that it was a lapse from habit. He distrusted himself in an unaccustomed environment of the emotions.

But superinduced on this formless uneasiness were graver considerations.

He could not but admit to himself that he had by his expressed order placed himself to some extent in Saleratus Bill's power. He did not for a moment doubt the gun-man's loyal intentions. As long as things went well he would do his best by his employer--if merely to gain the reward promised him only on fulfillment of his task. But it is not easy to commit a murder undetected. And if detected, Oldham had no illusions as to Saleratus Bill. The gun-man, would promptly shelter himself behind his princ.i.p.al.

As the night went on, and Oldham found himself unable to sleep in the terrible heat, the situation visualized itself. Step by step he followed out the sequence of events as they might be, filling in the minutest details of discovery, exposure and ruin. Gradually, in the tipped balance of after midnight, events as they might be became events as they surely would be. Oldham began to see that he had made a fearful mistake.

No compunction entered his mind that he had condemned a man to death; but a cold fear gripped him lest his share should be discovered, and he should be called upon to face the consequences. Oldham enjoyed and could play only the game that was safe so far as physical and personal retribution went.

So deeply did the guilty panic invade his soul that after a time he arose and dressed. The sleepy porter was just turning out from the smoking compartment.

"What's this next station?" Oldham demanded.

"Mo-harvey," blinked the porter.

"I get off there," stated Oldham briefly.

The porter stared at him.

"I done thought you went 'way through," he confessed. "I'se scairt I done forgot you."

"All right," said Oldham curtly, and handing him a tip. "Never mind that confounded brush; get my suit case."

Ten seconds later he stood on the platform of the little station in the desert while the tail lights of the train diminished slowly into the distance.

The desert lay all about him like a calmed sea on which were dim half-lights of sage brush or alkali flats. On a distant horizon slept black mountain ranges, stretched low under a brilliant sky that arched triumphant. In it the stars flamed steadily like candles, after the strange desert fashion. Although by day the heat would have scorched the boards on which he stood, now Oldham shivered in the searching of the cool insistent night wind that breathed across the great s.p.a.ces.

He turned to the lighted windows of the little station where a tousled operator sat at a telegraph key. A couch in the corner had been recently deserted. The fact that the operator was still awake and on duty argued well for another train soon. Oldham proffered his question.

"Los Angeles express due now. Half-hour late," replied the operator wearily, without looking up.

Oldham caught the train, which landed him in White Oaks about noon.

There he hired a team, and drove the sixty miles to Sycamore Flats by eleven o'clock that night. The fear was growing in his heart, and he had to lay on himself a strong retaining hand to keep from lashing his horses beyond their endurance and strength. Sycamore Flats was, of course, long since abed. In spite of his wild impatience Oldham retained enough sense to know that it would not do to awaken any one for the sole purpose of inquiring as to the whereabouts of Saleratus Bill. That would too obviously connect him with the gun-man. Therefore he stabled his horses, roused one of the girls at Auntie Belle's, and retired to the little box room a.s.signed him.

There nature a.s.serted herself. The man had not slept for two nights; he had travelled many miles on horseback, by train, and by buckboard; he had experienced the most exhausting of emotions and experiences. He fell asleep, and he did not awaken until after sun-up.

Promptly he began his inquiries. Saleratus Bill had pa.s.sed through the night before; he had ridden up the mill road.

Oldham ate his breakfast, saddled one of the team horses, and followed.

Ordinarily, he was little of a woodsman, but his anxiety sharpened his wits and his eyes, so that a quarter mile from the summit he noticed where a shod horse had turned off from the road. After a moment's hesitation he turned his own animal to follow the trail. The horse tracks were evidently fresh, and Oldham surmised that it was hardly probable two hors.e.m.e.n had as yet that morning travelled the mill road.

While he debated, young Elliott swung down the dusty way headed toward the village. He greeted Oldham.

"Is Orde back at headquarters yet?" the latter asked, on impulse.

"Yes, he got back day before yesterday," the young ranger replied; "but you won't find him there this morning. He walked over to the mill to see Welton. You'd probably get him there."

Oldham waited only until Elliott had rounded the next corner, then spurred his horse up the mountain. The significance of the detour was now no longer in doubt, for he remembered well how and where the wagon trail from headquarters joined the mill road. Saleratus Bill would leave his horse out of sight on the hog-back ridge, sneak forward afoot, and ambush his man at the forks of the road.

And now, in the clairvoyance of this guilty terror, Oldham saw as a.s.sured facts several further possibilities. Saleratus Bill was known to have ridden up the mill road; he, Oldham, was known to have been inquiring after both Saleratus Bill and Orde--in short, out of wild improbabilities, which to his ordinary calm judgment would have meant nothing at all, he now wove a tissue of danger. He wished he had thought to ask Elliott how long ago Orde had started out from headquarters.

The last pitch up the mountain was by necessity a fearful grade, for it had to surmount as best it could the ledge at the crest of the plateau.

Hors.e.m.e.n here were accustomed to pause every fifty feet or so to allow their mounts a gulp of air. Oldham plied lash and spur. He came out from his frenzy of panic to find his horse, completely blown, lying down under him. The animal, already weary from its sixty-mile drive of yesterday, was quite done. After a futile effort to make it rise, Oldham realized this fact. He pursued his journey afoot.

Somewhat sobered and brought to his senses by this accident, Oldham trudged on as rapidly as his wind would allow. As he neared the crossroads he slackened his pace, for he saw that no living creature moved on the headquarters fork of the road. As a matter of fact, at that precise instant both Bob and Ware were within forty yards of him, standing still waiting for Amy to collect her dogwood leaves. A single small alder concealed them from the other road. If they had not happened to have stopped, two seconds would have brought them into sight in either direction. Therefore, Oldham thought the road empty, and himself came to a halt to catch his breath and mop his brow.

As he replaced his hat, his eye caught a glimpse of a man crouching and gliding cautiously forward through the low concealment of the s...o...b..sh.

His movements were quick, his head was craned forward, every muscle was taut, his eyes fixed on some object invisible to Oldham with an intensity that evidently excluded from the field of his vision everything but that toward which his lithe and snake-like advance was bringing him. In his hand he carried the worn and shining Colts 45 that was always his inseparable companion.

Oldham made a single step forward. At the same moment somewhere above him on the hill a woman screamed. The cry was instantly followed by two revolver shots.

x.x.xIV

Ware was an expert gun-man who had survived the early days of Arizona, New Mexico, and the later ruffianism of the border on Old Mexico. His habit was at all times alert. Now, in especial, behind his casual conversation, he had been straining his finer senses for the first intimations of danger. For perhaps six seconds before Amy cried out he had been aware of an unusual faint sound heard beneath rather than above the cheerful and accustomed noises of the forest. It baffled him. If he had imposed silence on his companion, and had set himself to listening, he might have been able to identify and localize it, but it really presented nothing alarming enough. It might have been a squirrel playfully spasmodic, or the leisurely step forward of some hidden and distant cow browsing among the bushes. Ware lent an attentive ear to the quiet sounds of the woodland, but continued to stand at ease and unalarmed.

The scream, however, released instantly the springs of his action. With the heel of his left palm he dealt Bob so violent a shoving blow that the young man was thrown forward off his feet. As part of the same motion his right hand s.n.a.t.c.hed his weapon from its holster, threw the muzzle over his left shoulder, and discharged the revolver twice in the direction from which Ware all at once realized the sound had proceeded.

So quickly did the man's brain act, so instantly did his muscles follow his brain, that the scream, the blow, and the two shots seemed to go off together as though fired by one fuse.