Three days after the wreck in the Lava Hills, Ballard was again making the round of the outpost camps in the western end of the valley, verifying grade lines, re-establishing data stakes lost, or destroyed by the Craigmiles range riders, hustling the ditch diggers, and, incidentally, playing host to young Lucius Bigelow, the Forestry Service member of Miss Elsa's house-party.

Bigelow's inclusion as a guest on the inspection gallop had been planned, not by his temporary host, but by Miss Elsa herself. Mr. Bigelow's time was his own, she had explained in her note to Ballard, but he was sufficiently an enthusiast in his chosen profession to wish to combine a field study of the Arcadian watersheds with the pleasures of a summer outing. If Mr. Ballard would be so kind ... and all the other fitting phrases in which my lady begs the boon she may strictly require at the hands of the man who has said the talismanic words, "I love you."

As he was constrained to be, Ballard was punctiliously hospitable to the quiet, self-contained young man who rode an entire day at his pace-setter's side without uttering a dozen words on his own initiative. The hospitality was purely dutiful at first; but later Bigelow earned it fairly. Making no advances on his own part, the guest responded generously when Ballard drew him out; and behind the mask of thoughtful reticence the Kentuckian discovered a man of stature, gentle of speech, simple of heart, and a past-master of the wood- and plains-craft that a constructing engineer, however broad-minded, can acquire only as his work demands it.

"You gentlemen of the tree bureau can certainly give us points on ordinary common sense, Mr. Bigelow," Ballard admitted on this, the third day out, when the student of natural conditions had called attention to the recklessness of the contractors in cutting down an entire forest of slope-protecting young pines to make trestle-bents for a gulch flume. "I am afraid I should have done precisely what Richards has done here: taken the first and most convenient timber I could lay hands on."

"That is the point of view the Forestry Service is trying to modify," rejoined Bigelow, mildly. "To the average American, educated or ignorant, wood seems the cheapest material in a world of plenty. Yet I venture to say that in this present instance your company could better have afforded almost any other material for those trestle-bents. That slope will make you pay high for its stripping before you can grow another forest to check the flood wash."

"Of course it will; that says itself, now that you have pointed it out," Ballard agreed. "Luckily, the present plans of the company don't call for much flume timber; I say 'luckily,' because I don't like to do violence to my convictions, when I'm happy enough to have any."

Bigelow's grave smile came and went like the momentary glow from some inner light of prescience.

"Unless I am greatly mistaken, you are a man of very strong convictions, Mr. Ballard," he ventured to say.

"Think so? I don't know. A fair knowledge of my trade, a few opinions, and a certain pig-headed stubbornness that doesn't know when it is beaten: shake these up together and you have the compound which has misled you. I'm afraid I don't often wait for convincement—of the purely philosophical brand."

They were riding together down the line of the northern lateral canal, with Bourke Fitzpatrick's new headquarters in the field for the prospective night's bivouac. The contractor's camp, a disorderly blot of shanties and well-weathered tents on the fair grass-land landscape, came in sight just as the sun was sinking below the Elks, and Ballard quickened the pace.

"You'll be ready to quit for the day when we get in, won't you?" he said to Bigelow, when the broncos came neck and neck in the scurry for the hay racks.

"Oh, I'm fit enough, by now," was the ready rejoinder. "It was only the first day that got on my nerves."

There was a rough-and-ready welcome awaiting the chief engineer and his guest when they drew rein before Fitzpatrick's commissary; and a supper of the void-filling sort was quickly set before them in the back room of the contractor's quarters. But there was trouble in the air. Ballard saw that Fitzpatrick was cruelly hampered by the presence of Bigelow; and when the meal was finished he gave the contractor his chance in the privacy of the little cramped pay-office.

"What is it, Bourke?" he asked, when the closed door cut them off from the Forest Service man.

Fitzpatrick was shaking his head. "It's a blood feud now, Mr. Ballard. Gallagher's gang—all Irishmen—went up against four of the colonel's men early this morning. The b'ys took shelter in the ditch, and the cow-punchers tried to run 'em out. Some of our teamsters were armed, and one of the Craigmiles men was killed or wounded—we don't know which: the others picked him up and carried him off."

Ballard's eyes narrowed under his thoughtful frown.

"I've been afraid it would come to that, sooner or later," he said slowly. Then he added: "We ought to be able to stop it. The colonel seems to deprecate the scrapping part of it as much as we do."

Fitzpatrick's exclamation was of impatient disbelief. "Any time he'll hold up his little finger, Mr. Ballard, this monkey-business will go out like a squib fuse in a wet hole! He isn't wanting to stop it."

Ballard became reflective again, and hazarded another guess.

"Perhaps the object-lesson of this morning will have a good effect. A chance shot has figured as a peacemaker before this."

"Don't you believe it's going to work that way this time!" was the earnest protest. "If the Craigmiles outfit doesn't whirl in and shoot up this camp before to-morrow morning, I'm missing my guess."

Ballard rapped the ashes from his briar, and refilled and lighted it. When the tobacco was glowing in the bowl, he said, quite decisively: "In that case, we'll try to give them what they are needing. Are you picketed?"

"No."

"See to it at once. Make a corral of the wagons and scrapers and get the stock inside of it. Then put out a line of sentries, with relays to relieve the men every two hours. We needn't be taken by surprise, whatever happens."

Fitzpatrick jerked a thumb toward the outer room where Bigelow was smoking his after-supper pipe.

"How about your friend?" he asked.

At the query Ballard realised that the presence of the Forest Service man was rather unfortunate. Constructively his own guest, Bigelow was really the guest of Colonel Craigmiles; and the position of a neutral in any war is always a difficult one.

"Mr. Bigelow is a member of the house-party at Castle 'Cadia," he said, in reply to the contractor's doubtful question. "But I can answer for his discretion. I'll tell him what he ought to know, and he may do as he pleases."

Following out the pointing of his own suggestion, Ballard gave Bigelow a brief outline of the Arcadian conflict while Fitzpatrick was posting the sentries. The Government man made no comment, save to say that it was a most unhappy situation; but when Ballard offered to show him to his quarters for the night, he protested at once.

"No, indeed, Mr. Ballard," he said, quite heartily, for him; "you mustn't leave me out that way. At the worst, you may be sure that I stand for law and order. I have heard something of this fight between your company and the colonel, and while I can't pretend to pass upon the merits of it, I don't propose to go to bed and let you stand guard over me."

"All right, and thank you," laughed Ballard; and together they went out to help Fitzpatrick with his preliminaries for the camp defence.

This was between eight and nine o'clock; and by ten the stock was corralled within the line of shacks and tents, a cordon of watchers had been stretched around the camp, and the greater number of Fitzpatrick's men were asleep in the bunk tents and shanties.

The first change of sentries was made at midnight, and Ballard and Bigelow both walked the rounds with Fitzpatrick. Peace and quietness reigned supreme. The stillness of the beautiful summer night was undisturbed, and the roundsmen found a good half of the sentinels asleep at their posts. Ballard was disposed to make light of Fitzpatrick's fears, and the contractor took it rather hard.

"I know 'tis all hearsay with you, yet, Mr. Ballard; you haven't been up against it," he protested, when the three of them were back at the camp-fire which was burning in front of the commissary. "But if you had been scrapping with these devils for the better part of two years, as we have——"

The interruption was a sudden quaking tremor of earth and atmosphere followed by a succession of shocks like the quick firing of a battleship squadron. A sucking draught of wind swept through the camp, and the fire leaped up as from the blast of an underground bellows. Instantly the open spaces of the headquarters were alive with men tumbling from their bunks; and into the thick of the confusion rushed the lately posted sentries.

For a few minutes the turmoil threatened to become a panic, but Fitzpatrick and a handful of the cooler-headed gang bosses got it under, the more easily since there was no attack to follow the explosions. Then came a cautious reconnaissance in force down the line of the canal in the direction of the earthquake, and a short quarter of a mile below the camp the scouting detachment reached the scene of destruction.

The raiders had chosen their ground carefully. At a point where the canal cutting passed through the shoulder of a hill they had planted charges of dynamite deep in the clay of the upper hillside. The explosions had started a land-slide, and the patient digging work of weeks had been obliterated in a moment.

Ballard said little. Fitzpatrick was on the ground to do the swearing, and the money loss was his, if Mr. Pelham's company chose to make him stand it. What Celtic rage could compass in the matter of cursings was not lacking; and at the finish of the outburst there was an appeal, vigorous and forceful.

"You're the boss, Mr. Ballard, and 'tis for you to say whether we throw up this job and quit, or give these blank, blank imps iv hell what's comin' to 'em!" was the form the appeal took; and the new chief accepted the challenge promptly.

"What are your means of communication with the towns in the Gunnison valley?" he asked abruptly.

Fitzpatrick pulled himself down from the rage heights and made shift to answer as a man.

"There's a bridle trail down the canyon to Jack's Cabin; and from that on you hit the railroad."

"And the distance to Jack's Cabin?"

"Twenty-five miles, good and strong, by the canyon crookings; but only about half of it is bad going."

"Is there anybody in your camp who knows the trail?"

"Yes. Dick Carson, the water-boy."

"Good. We'll go back with you, and you'll let me have the boy and two of your freshest horses."

"You'll not be riding that trail in the dark, Mr. Ballard! It's a fright, even in daylight."

"That's my affair," said the engineer, curtly. "If your boy can find the trail, I'll ride it."

That settled it for the moment, and the scouting party made its way up to the headquarters to carry the news of the land-slide. Bigelow walked in silence beside his temporary host, saying nothing until after they had reached camp, and Fitzpatrick had gone to assemble the horses and the guide. Then he said, quite as if it were a matter of course:

"I'm going with you, Mr. Ballard, if you don't object."

Ballard did object, pointedly and emphatically, making the most of the night ride and the hazardous trail. When these failed to discourage the young man from Washington, the greater objection came out baldly.

"You owe it to your earlier host to ride back to Castle 'Cadia from here, Mr. Bigelow. I'm going to declare war, and you can't afford to identify yourself with me," was the way Ballard put it; but Bigelow only smiled and shook his head.

"I'm not to be shunted quite so easily," he said. "Unless you'll say outright that I'll be a butt-in, I'm going with you."

"All right; if it's the thing you want to do," Ballard yielded. "Of course, I shall be delighted to have you along." And when Fitzpatrick came with two horses he sent him back to the corral for a third.

The preparations for the night ride were soon made, and it was not until Ballard and Bigelow were making ready to mount at the door of the commissary that Fitzpatrick reappeared with the guide, a grave-faced lad who looked as if he might be years older than any guess his diminutive stature warranted. Ballard's glance was an eye-sweep of shrewd appraisal.

"You're not much bigger than a pint of cider, Dickie boy," he commented. "Why don't you take a start and grow some?"

"I'm layin' off to; when I get time. Pap allows I got to'r he won't own to me," said the boy soberly.

"Who is your father?" The query was a mere fill-in, bridging the momentary pause while Ballard was inspecting the saddle cinchings of the horse he was to ride; and evidently the boy so regarded it.

"He's a man," he answered briefly, adding nothing to the supposable fact.

Bigelow was up, and Ballard was putting a leg over his wiry little mount when Fitzpatrick emerged from the dimly lighted interior of the commissary bearing arms—a pair of short-barrelled repeating rifles in saddle-holsters.

"Better be slinging these under the stirrup-leathers—you and your friend, Mr. Ballard," he suggested. "All sorts of things are liable to get up in the tall hills when a man hasn't got a gun."

This was so patently said for the benefit of the little circle of onlooking workmen that Ballard bent to the saddle-horn while Fitzpatrick was buckling the rifle-holster in place.

"What is it, Bourke?" he asked quietly.

"More of the same," returned the contractor, matching the low tone of the inquiry. "Craigmiles has got his spies in every camp, and you're probably spotted, same as old man Macpherson used to be when he rode the work. If that cussed Mexican foreman does be getting wind of this, and shy a guess at why you're heading for Jack's Cabin and the railroad in the dead o' night——"

Ballard's exclamation was impatient.

"This thing has got on your digestion, Bourke," he said, rallying the big contractor. "Up at the Elbow Canyon camp it's a hoodoo bogey, and down here it's the Craigmiles cow-boys. Keep your shirt on, and we'll stop it—stop it short." Then, lowering his voice again: "Is the boy trustworthy?"

Fitzpatrick's shrug was more French than Irish.

"He can show you the trail; and he hates the Craigmiles outfit as the devil hates holy water. His father was a 'rustler,' and the colonel got him sent over the road for cattle-stealing. Dick comes of pretty tough stock, but I guess he'll do you right."

Ballard nodded, found his seat in the saddle, and gave the word.

"Pitch out, Dick," he commanded; and the small cavalcade of three skirted the circle of tents and shacks to take the westward trail in single file, the water-boy riding in advance and the Forestry man bringing up the rear.

In this order the three passed the scene of the assisted land-slide, where the acrid fumes of the dynamite were still hanging in the air, and came upon ground new to Bigelow and practically so to Ballard. For a mile or more the canal line hugged the shoulders of the foothills, doubling and reversing until only the steadily rising sky-line of the Elks gave evidence of its progress westward.

As in its earlier half, the night was still and cloudless, and the stars burned with the white lustre of the high altitudes, swinging slowly to the winding course in their huge inverted bowl of velvety blackness. From camp to camp on the canal grade there was desertion absolute; and even Bigelow, with ears attuned to the alarm sounds of the wilds, had heard nothing when the cavalcade came abruptly upon Riley's camp, the outpost of the ditch-diggers.

At Riley's they found only the horse-watchers awake. From these they learned that the distant booming of the explosions had aroused only a few of the lightest sleepers. Ballard made inquiry pointing to the Craigmiles riders. Had any of them been seen in the vicinity of the outpost camp?

"Not since sundown," was the horse-watcher's answer. "About an hour before candle-lightin', two of 'em went ridin' along up-river, drivin' a little bunch o' cattle."

The engineer gathered rein and was about to pull his horse once more into the westward trail, when the boy guide put in his word.

"Somebody's taggin' us, all right, if that's what you're aimin' to find out," he said, quite coolly.

Ballard started. "What's that?" he demanded. "How do you know?"

"Been listenin'—when you-all didn't make so much noise that I couldn't," was the calm rejoinder. "There's two of 'em, and they struck in just after we passed the dynamite heave-down."

Ballard bent his head and listened. "I don't hear anything," he objected.

"Nachelly," said the boy. "They-all ain't sech tenderfoots as to keep on comin' when we've stopped. Want to dodge 'em?"

"There's no question about that," was the mandatory reply.

The sober-faced lad took a leaf out of the book of the past—his own or his cattle-stealing father's.

"We got to stampede your stock a few lines, Pete," he said, shortly, to the horse-watcher who had answered Ballard's inquiry. "Get up and pull your picket-pins."

"Is that right, Mr. Ballard?" asked the man.

"It is if Dick says so. I'll back his orders."

The boy gave the orders tersely after the horse-guard had risen and kicked his two companions awake. The night herdsmen were to pick and saddle their own mounts, and to pull the picket-pins for the grazing mule drove. While this was doing, the small plotter vouchsafed the necessary word of explanation to Ballard and Bigelow.

"We ride into the bunch and stampede it, headin' it along the trail the way we're goin'. After we've done made noise enough and tracks enough, and gone far enough to make them fellers lose the sound of us that they've been follerin', we cut out of the crowd and make our little pasear down canyon, and the herd-riders can chase out and round up their stock again: see?"

Ballard made the sign of acquiescence; and presently the thing was done substantially as the boy had planned. The grazing mules, startled by the sudden dash of the three mounted broncos among them, and helped along by a few judicious quirt blows, broke and ran in frightened panic, carrying the three riders in the thick of the rout.

Young Carson, skilful as the son of the convict stock-lifter had been trained to be, deftly herded the thundering stampede in the desired direction; and at the end of a galloping mile abruptly gave the shrill yell of command to the two men whom he was piloting. There was a swerve aside out of the pounding melÉe, a dash for an opening between the swelling foothills, and the ruck of snorting mules swept on in a broad circle that would later make recapture by the night herders a simple matter of gathering up the trailing picket-ropes.

The three riders drew rein in the shelter of the arroyo gulch to breathe their horses, and Ballard gave the boy due credit.

"That was very neatly done, Dick," he said, when the thunder of the pounding hoofs had died away in the up-river distances. "Is it going to bump those fellows off of our trail?"

The water-boy was humped over the horn of his saddle as if he had found a stomach-ache in the breathless gallop. But he was merely listening.

"I ain't reskin' any money on it," he qualified. "If them cow-punch's 've caught on to where you're goin', and what you're goin' fer——"

Out of the stillness filling the hill-gorge like a black sea of silence came a measured thudding of hoofs and an unmistakable squeaking of saddle leather. Like a flash the boy was afoot and reaching under his bronco's belly for a tripping hold on the horse's forefoot. "Down! and pitch the cayuses!" he quavered stridently; and as the three horses rolled in the dry sand of the arroyo bed with their late riders flattened upon their heads, the inner darkness of the gorge spat fire and there was a fine singing whine of bullets overhead.