“Indians,” announced Stanley after a brief moment of inspection.

“We are cut off,” he added, looking alertly over the landscape about them. “This way, Bucks. Ride as low as you can.” Without further words he made an abrupt turn to the right, striking south to get behind a friendly butte that rose half a mile away.

“The question now is,” said Stanley, as they held their horses up a little after getting somewhat farther out of sight, “whether they have likewise seen us.”

The harried pair were not long in doubt. They had hardly changed their course when there was immediate activity on the hill-side. The railroad men spurred on; the distant horsemen, now on their flank, dashed out upon the broad slope that lay between the two parties and rode straight and hard after the fleeing men. Stanley steadied his inexperienced companion as the latter urged his horse. “Not too hard just now. Your pony will need all his wind. It’s a question of getting away with our scalps and we must be careful. Follow me.”

Bucks’s heart, as he looked back, crowded up into his throat. A long skirmish line of warriors had spread across the unbroken plateau to the east, and Stanley, with nothing but instinct for a guide, was making at top speed to the south to get away from them.

As the two dashed on, they found to their consternation that the country was growing smoother and affording fewer hiding-places from the sharp eyes behind them. Stanley knew they must either ride through the hills ahead or perish. He sought vainly for some break in the great black wall of low-lying mountains toward which they were riding, yet from what he knew of the country he hardly dared hope for one.

He had reconnoitred these hills time after time when running the railroad lines and knew pretty well where he was. The pursuers, too, apparently sure of their prey, rode hard, gradually lessening the distance that separated them from the wary soldier and his companion. The Indians had ceased yelling now. It was beyond that. But even in his excitement and fear the inexperienced boy could not but admire the composure and daring of his companion.

As Stanley glanced now and again back at his enraged enemies he was every inch a soldier. And he watched the distance between the Cheyennes and himself as coolly as if calculating a mere problem in geometry. While saving every possible breath for his horses, he yet managed to keep the Cheyennes at a distance. The Indians, bent on overhauling the fleeing men before they could reach even the scant protection of the scattered timber they were now approaching, redoubled their efforts to cut off the escape.

Forced by the desperation of his circumstances, Stanley bent more and more to the west of south, even though in doing so he seemed to be getting into a more hopeless country. The veteran campaigner eyed Bucks’s horse carefully as he turned in his saddle, but Scott’s wiry beast appeared quite fresh, and Stanley, turning his eyes, again swept the horizon for a friendly break in the black walls ahead. As he did so he was startled to see, directly in front, Indians riding at full speed out of the hills he was heading for. He reined his galloping horse and turned straight into the west.

“Bucks,” he exclaimed, looking with concern at the rider now by his side, “it’s a case of obey orders now. If I stop at any time, you ride straight on do you understand? You’ve got a revolver?” Bucks tapped the big Colt at his side. “Don’t let them take you alive. And hold your last shot till a buck rides in for your scalp.”

The straining horses seemed to understand the sharp words that passed from saddle to saddle. The Indians were already within gunshot, but too sure of their game to lose any time in shooting; nor was Stanley willing to waste a shot upon them. As he dodged in between a broken wall of granite and a scrubby clump of cedars, closely followed by Bucks, their pursuers could have picked either man from his saddle.

Stanley had no longer any fixed purpose of escape. He meant merely to dismount when he could ride no farther and sell his life as best he could, while Bucks took such further chance of escape as his companion’s last stand might afford. The hard-driven fighter was even looking for a well-placed rock to drop behind, when the horse plunging under him lurched to one side of the cedars and a gulf in the walls suddenly opened before his surprised rider.

A rotten ledge of burned granite seemed to head a mountain wash directly in their path. There was a sheer drop of twenty feet to the crumbling slope of disintegrated stone under the head of the draw itself, but Stanley, without looking back, never hesitated. Urging his panting horse, he made a flying leap down into space, and horse and rider landed knee-deep in the soft, gravelly granite below them.

Bucks’s mustang shied on the brink. He spurred him excitedly, and the trembling beast, nerving himself, leaped far out over the ledge, following Stanley so closely that he almost struck him with his hoofs as he went flying over the engineer’s head. Bucks rolled headlong as his horse plunged into the loose debris. He scrambled to his feet and, spitting the gravel from between his bruised lips, caught the bridle of his horse as the latter righted himself.

No legs were broken and much was already gained.

“Quick!” cried Stanley. “Ride for your life!” he shouted as Bucks regained his saddle. The two spurred at the same time and dashed down the draw at breakneck speed just as the Indians yelling on the brink of the ledge stopped to pour a volley after the desperate men. Unable to land an effective shot, the Cheyennes, nothing daunted, and hesitating only a moment, plunged over the precipice after their quarry.

But they had lost their great advantage. The dry watercourse proved unexpectedly good riding for the fleeing railroad men. It was a downhill run, with their hopes rising every moment. Moreover, the draw soon turned sharply to the south and put a big shoulder of granite between the pursuers and the pursued. The horses of the latter were now relieved, and the wary Stanley, riding with some reserve speed, held his rifle ready for a stern shot should one become necessary. He found himself riding between two almost perpendicular walls washed by the same granite gravel into which they had plunged on the start, but with the course again turning, to his surprise, to the east. Once, Stanley checked the flight long enough to stop and listen, but the two heard the active Indians clattering down the canyon after them, and rode on and on.

As they could see by the lengthening shadow on the mountain-sides far above them, the sun was setting.

“Cheer up,” cried Stanley, who had put his companion ahead of him. “We’ve got the best of them. All we need is open country.”

He did not mention the chances of disaster, which were that they might encounter an obstacle that would leave them at bay before their tireless pursuers. Mile after mile they galloped without halting again to see whether they were being chased. Indeed, no distance seemed too considerable to put between them and the active war-paint in the saddles behind.

A new turn in the canyon now revealed a wide valley opening between the hills before them. Far below, golden in the light of the setting sun, they saw the great eastern slope of the Black Hills spreading out upon a beautiful plain.

Stanley swung his hat from his head with an exulting cry, and Bucks, without quite understanding why, but assuming it the right thing to do, yelled his loudest. On and on they rode, down a broad, spreading ridge that led without a break from the tortuous hills behind them into the open country far below. Stanley put full ten miles between himself and the canyon they had ridden out of before he checked his speed. The Indians had completely disappeared and, disappointed in their venture, had no doubt ridden back to their fastnesses to wait for other unwary white men. Stanley chose a little draw with good water and grass, and night was just falling as they picketed their exhausted horses and stretched themselves, utterly used up, on the grass.

“We are safe until morning, anyway,” announced Stanley as he threw himself down. “And this Indian chase may be the luckiest thing that has ever happened to me in the troublesome course of an unlucky life.

“You don’t understand,” continued the engineer, wiping the sweat and dust from his tired face. Bucks admitted that he did not.

“No matter,” returned his companion; “it isn’t necessary now. You will sometime. But I think I have done in the last hour something I have been trying to do for years. Many others have likewise failed in the same quest.”

Bucks listened with growing interest.

“Yes, for years,” Stanley went on, “incredible as it may sound, I have been searching these mountains for just such a crevice as we have this moment ridden down. You see how this range” the exhausted engineer stretched flat on his back, but, with burning eyes, pointed to the formidable mountain wall that rose behind them in the dusk of the western sky “rises abruptly from the plains below. Our whole grade climb for the continental divide is right here, packed into these few miles. Neither I nor any one else has ever been able to find such a pass as we need to get up into it. But if we have saved our scalps, my boy, you will share with me the honor of finding the pass for the Union Pacific Railroad over the Rocky Mountains.”

They were supperless, but it was very exciting, and Bucks was extremely happy. Stanley watched that night until twelve. When he woke Bucks the moon was rising and the ghostly peaks in the west towered sentinel-like above the plains flooded with silver. The two were to move at one o’clock when the moon would be high enough to make riding safe. It was cold, but fire was forbidden.

The horses were grazing quietly, and Bucks, examining his revolver, which he had all the time felt he was wretchedly incompetent to shoot, sat down beside Stanley, already fast asleep, to stand his watch. He had lost Sublette’s rifle in falling into the wash-out. At least he had found no leisure to pick it up and save his hair in the same instant, and he wondered now how much he should have to pay for the rifle.

When the sun rose next morning the two horsemen were far out of the foot-hills and bearing northeast toward camp so far had their ride for life taken them from their hunting ground. They scanned the horizon at intervals, with some anxiety, for Indians, and again with the hope of sighting their missing guide. Once they saw a distant herd of buffalo, and Bucks experienced a shock until assured by Stanley that the suspicious objects were neither Cheyennes nor Sioux.

By nine o’clock they had found the transcontinental telegraph line and had a sure trail to follow until they discovered the grade stakes of the railroad, and soon descried the advance-guard of the graders busy with plough and shovel and scraper. As they rode into camp the very first man to emerge from Casement’s tent, with his habitual smile, was Bob Scott.

Casement himself, who had heard Scott’s story when the latter had come in at daybreak, was awaiting Stanley’s return with anxiety, but this was all forgotten in the great news Stanley brought. Sublette and Scott now returned to the hunting camp for the cavalry detail, and, reinforced by these, the two heroes of the long flight rode back to reconnoitre their escape from the mountains. Bucks rode close to Bob Scott and learned how the scout had outwitted his assailants at the canyon, and how after they had all ridden out of it, he had ridden into it and retraced with safety in the night the path that the hunters had followed in riding into the hill country.

The second ride through the long defile, which itself was now the object of so much intense inspection, Bucks found much less exciting than the first. The party even rode up to where the first flying leap had been made, and to Bucks’s joy found Sublette’s rifle still in the wash; it had been overlooked by the Indians.

What surprised Bucks most was to find how many hours it took to cover the ground that Stanley and he had negotiated in seemingly as many minutes.