The Indians, spying them, formed a semicircle and galloped towards the fearless couple, who put their horses to a canter, and, riding directly against the center of the line of warriors, dashed through it on the run. The Indians, quickly recovering from the astonishment produced by this daring manoeuver, wheeled their horses and dashed after them. All but ten of the Indians were soon distanced; these ten continued the pursuit, but in an hour and a half this number was reduced to seven, and in another hour only five remained. They were evidently young braves, who were hoping to distinguish themselves by taking two American soldiers' scalps. On they sped--the pursuers and the pursued--over the wild plain. A space of barely half a mile divided them. The horses, however, of each party seemed so evenly matched in speed and endurance that neither gained on the other. The mustangs, the one ridden by our heroine, the other with only a ninety pound pack on its back, though glossy with sweat, and their nostrils crimson and expanded with the terrible strain upon them, showed no sign of flagging. The guide's horse, a heavier animal, began at length to show symptoms of fatigue. If there had been time, he would have shifted his saddle on the pack-mustang, but this was not to be thought of. By dint of spurring and lashing the smoking flanks of the now drooping steed, he barely kept his place by the side of his companion. They were now near a small creek, an affluent of the Arkansas, when the guide, turning his eyes, saw that only three of the Indians were on their trail, the two others were galloping slowly back. Just as he announced this fact to Mrs. Coolidge, his tired horse fell heavily, throwing him forward upon his head and stunning him senseless. Our heroine, dismounting, dragged her unconscious comrade to the bank of the creek, and, throwing water in his face, quickly restored him to his senses; but, before he could handle his gun, the Indians had come within a hundred paces, whooping fiercely to call back their companions, who just before abandoned the pursuit. They were luckily only armed with bows and arrows, and, circling about the fearless pair, they launched arrow after arrow, though without doing any execution. One of them fell before the rifle of Mrs. Coolidge. A second was brought to earth by the guide, who had by this time revived sufficiently to join in the fight. The third turned and galloped off towards his two companions, who were now hastening to the scene of conflict.