At intervals, shots from the Indians reached their ears, and long-drawn yells, followed by the sharper crack of Scott's rifle, echoed from the west as the scout held the wall against the enemy. Bucks did not understand the real danger that the scout feared for his party. It was that other parties of the marauding Cheyennes might, by following the creek, gain the divide in time to cut off the railroad men from their line of escape. The sounds of the stubborn contest behind them died away as their straining horses gradually put miles between them and the enemy. The fugitives had reached the summit of the hills and with a feeling of safety were easing their pace when Bucks discerned, almost directly ahead of them, dark objects moving slowly along the foot of a wooded hill. The two men halted. CHAPTER V "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.