time. The speed of Dick rapidly carried him and his rider beyond reach of any bow and arrow ever devised. The gorge remained comparatively straight for quite a way, and the mutual view lasted longer than would have been the case either earlier or later.
Alden was not yet out of sight of the Indian when he emitted a series of tremulous whoops, the like of which the rider had never before heard on his journey across the plains. The first sound was an explosive shout, and the half dozen which succeeded trailed off into silence. The redskin made this strange outcry three times and then ceased.
“I suppose he means that as a reply to my salute,” laughed Alden, who the next minute whisked beyond view around a turn in the gorge. “If I knew how to reply I should do so, but we’ll have to wait till next time.”
Dick showed no disposition to slacken his pace and his rider did not restrain him. Just after making the turn referred to Alden turned his head. What led him to do so he could not explain since he knew he was clear of the warrior whom he had nearly scared out of his wits, but he saw an amazing sight. The varying character of the gorge showed a projecting
