His ruse worked and he ran at top speed for twenty yards before he threw himself into a clump of cotton-woods close to the camp trail and began to reload. While he was doing so a shout came from the direction of the railroad bridge. Not until then did Bucks understand what the Indians were after. But had he not understood, he would have known a moment later when he heard a sharp exchange of shots toward the camp, heard the dogs barking furiously, and saw the Indians, now on their ponies, running the troopers' horses past him at a breakneck gallop. The Indians yelled lustily at the success of their raid, the stampeded horses dashed panic-stricken before them, and the braves shouted back in derision at the vain efforts of the troopers to stop them with useless bullets. Bucks's own impulse was to empty a charge of birdshot into the last of the fleeing warriors, but this he knew might cost him his life, and he resisted the temptation. When he was sure all were past he ran toward the bluffs, and gaining a little eminence saw the fleeing Indians, a dozen in all, making their way jubilantly up the river. At the camp the discomfited cavalrymen were preparing for a siege, and in their excitement almost shot Bucks as he hove in sight. Bucks gave a good description of the marauders, and, following him up to the pond, six of the troopers attempted some pursuit. This, to unmounted men, was useless, as they well knew. Indeed, they used caution not to come unawares on any friends of the escaping braves that might have lingered behind. Colonel Stanley returned in the morning to hear that his escort had been unhorsed. Bob Scott grinned at the cavalrymen as they told the story. He assured them that they had got off lightly, and that if Bucks's signals had not alarmed the little war-party they might have carried away scalps as well as horses. "We shall be in luck if we don't hear more of those fellows," said he to Bucks afterward. There was now manifestly nothing to do but to go in, and later in the day a freight train was flagged and the whole party, with Scuffy and the hounds, returned to Casement's camp. Scott sent his dogs thence to the ranch in Medicine Bend, and at Bucks's urgent request Scuffy was sent with them to await his own return to head-quarters. CHAPTER IX The foray of the Indians at the Spider Water Bridge proved, as Bob Scott had feared, only a forerunner of active hostilities. Casement had already taken all necessary measures of defence. His construction camp was moved steadily westward, though sometimes inside the picket lines of troops, despite the warring Indians and the difficulties of his situation. Alarms, however, were continual and the graders, many of whom were old soldiers, worked at all times with their muskets stacked on the dump beside them. In the construction camp Bucks saw also many negroes, and at night the camp-fires of their quarters were alive with the singing and dancing of the old plantation life in the South.