"Guess you'll be needin' a pair of specks, won't you, Whitey?" went on the Bar U foreman, without a glance at Len or Dave. "A Centre O brand an' a Bar U looks mighty alike to a feller with poor eyes I reckon," and he smiled meaningly. "Oh, we can't help it, if some of the Randolph cattle get mixed up with our strays," said Len. "Who's talkin' to you?" demanded Pocus Pete, with such fierceness that the bully shrank back. "Now you cut out what strays belong to you, an' let ours alone, Mr. Wasson," went on Pocus Pete with exaggerated politeness. "Dave an' I can take care of our own I reckon. An' move quick, too!" he added menacingly. Whitey did not answer, but he and Len busied themselves in getting together their own strays. Pocus Pete and Dave, with a little effort, managed to collect their own bunch, and soon the two parties were moving off in opposite directions. Dave sat silent on his horse. Pete glanced at him from time to time, but said nothing. Finally, however, as they dismounted to eat their lunch, Pete could not help asking: "Have any trouble with them, Dave?" "Trouble? Oh no." Dave relapsed into silence, and Pete shook his head in puzzled fashion. Something had happened, but what, he could not guess. In unwonted silence Dave and Pete rode back to the Bar U ranch, reaching it at dusk with the bunch of strays. They were turned in with the other cattle and then Dave, turning his horse into the corral, walked heavily to the ranch house. All the life seemed to have gone from him. "Well, son, did you get the bunch?" asked Mr. Carson as he greeted the youth. "Yes--I did," was the low answer. Mr. Carson glanced keenly at the lad, and something he saw in his face caused the ranch owner to start. "Was there any trouble?" he asked. It was the same question Pocus Pete had propounded. "Well, Len Molick and Whitey Wasson had some of our cattle in with theirs." "They did?" "Yes, but Pete and I easily cut 'em out. But--Oh, Dad!" The words burst from Dave's lips before he thought. "Am I your son?" he blurted out. "Len and Whitey said I was a picked-up nobody! Am I? Am I not your son?" He held out his hands appealingly. A great and sudden change came over Mr. Carson. He seemed to grow older and more sorrowful. A sigh came from him. Gently he placed one arm over the youth's drooping shoulders. "Dave," he said gently. "I hoped this secret would never come out--that you would never know. But, since it has, I must tell you the truth. I love you as if you were my own son, but you are not a relative of mine." The words seemed to cut Dave like a knife. "Then if I am not your son, who am I?" Dave asked in a husky voice. The ticking of the clock on the mantle could be plainly, yes, loudly heard, as Mr. Carson slowly answered in a low voice: "Dave, I don't know!" CHAPTER IV A SMALL STAMPEDE