Bonnie Bird had wandered down the brook for a drink and instantly returned at her master's call. With something of a sigh at not having finished matters with Yellow Elk the boomer leaped once again into the saddle and turned back in the direction from whence he had come.

It was now growing dark, and the great scout felt that he must ere long return to the boomers' camp and give the order necessary to start the long wagon train on its way westward to Honnewell. Little did he dream of what the government spy and the cavalrymen had discovered and how Jack Rasco had been taken prisoner.

"Pawnee!"

It was a cry from a patch of woods to the northward, and straining his eyes he saw Cal Clemmer waving his sombrero toward him. Scout and cowboy boomer were soon together.

"Well, whar's Rasco and the gal?" were Clemmer's first words.

"Both gone—I don't know where, Cal. Where are the other boys?"

"Started back toward Honnewell; thet is, all but Dick Arbuckle. He's over ter yonder spring gittin' a drink o' water."

"I am sorry I failed to find the girl," said Pawnee Brown. "She must have wandered off in the woods and got lost. I am quite certain the Indians did not spot her again."

"And Jack?"

"Went off after his horse."