Instantly Buffalo Bill dashed over the ridge of the hill that concealed him from the view of the Cheyennes, and rode directly toward the band going to attack the two white horsemen.

They halted suddenly at sight of him, but, seeing that he was alone, they started for him with wild yells.

But still he kept on directly toward them, until within range, when he opened upon them with his matchless Evans rifle, a thirty-four-shot repeater, and a hot fight began, for they returned the fire.

This was just what Buffalo Bill wanted, for the firing alarmed the horsemen and placed them on their guard, and he knew that the Indian volleys would be heard at the command and hasten them forward.

Having dropped a couple of red-skins and several ponies, Buffalo Bill wheeled to the rightabout, dashed up to the top of a hill, and, signaling to the two whites to follow him, headed for the command at full speed.

As he had anticipated, the two men were scouts with important dispatches for General Merritt, and Bill's bold act had not only saved their lives, but also the dispatches, and the result of it was that the Fifth Cavalry went at once into line of battle, while the Cheyennes also formed for battle, though evidently surprised at being headed off at that point.

But they saw that they were double the force of the whites, and were determined upon a fight, and their chiefs reconnoitered carefully their foes' strength and position.

Buffalo Bill also volunteered to go out and get a closer look at them, to see what they were up to, and General Merritt told him to do so, but not to venture too near and expose himself.

As he left the line two Indian horsemen also rode out from among their comrades, and one was some lengths in front of the other.

At a glance Buffalo Bill saw that the two were full chiefs, and they had not advanced far toward each other when he discovered that he was the especial object of their attention.