The savage chief sat his black horse in motionless gloom, and as though his eyes saw nothing. Captain Edward Keyes had kept his file of men in the saddle ready to make a break from the fort should the scouts fall in need of some attempt at rescue. Otherwise, everybody was crowding forward to look out of the gate, or, from the platform and watch-towers, to view the work of the brave men who had gone from them. The black horse, on which Buffalo Bill had ridden so many times, but which he had now been obliged to abandon because of its age and the fact that he had been ridden too hard on one or two occasions, missed its master. It had seen Buffalo Bill and his companion ride out of the fort, and it desired to follow. Perhaps the horse did not approve of the Indian that now backed him. However it was, it danced about a good deal, and champed at the bit, and seemed to give the stoical chief considerable trouble. Twice it started for the gate, and the soldiers headed it off. Likewise Oak Heart drew it in hard with his hand on the bridle. It seemed as though the chief had no expectation of leaving the fort until his white captors were ready. But that was all the savage cunning of the chief. It was his cunning, too, perhaps, that made the horse so nervous. He doubtless slyly spurred him with his toe or heel, and kept the animal on the qui vive all the time. Oak Heart could follow Buffalo Bill and Texas Jack with his eyes, and he doubtless understood--now, at least--just what they were about. Suddenly the White Antelope came into view, riding like the wind down upon the two scouts. Oak Heart’s face did not change a muscle, but just then his mount made a sidelong leap, and when he became manageable again the black charger was just within the open gateway. Several moments passed. The white men’s attention was strained upon the little comedy being enacted by the two scouts and the Indian maiden. They could not hear, of course, but they could imagine that the situation had become mighty “ticklish” for the scouts, knowing Buffalo Bill’s objection to injuring the Sioux maiden. It was at this minute that the black horse made a final charge through the gateway. Two men were knocked down, and Oak Heart threw himself over to one side of the galloping horse, shielding himself with its body from the guns of the surprised white men in the stockade. His wild yells had already apprised White Antelope of the deception. Buffalo Bill had disarmed her, and the two scouts spurred on toward the cañon.