It was this fluttering bit of paper that caught Dick's eye when he awakened, rather lame and stiff, and stretched himself in his blanket as the sun shone in his eyes next morning. "Hello!" he cried, taking a hasty look around to see if Bud had, perchance, ridden away without awakening his companions, and had left this note to tell them so. "What's the idea?" and then Dick noticed that all three of his companions were stretched out near him, and the four ponies were standing together not far away. "What idea?" asked Bud, sitting up and rubbing his eyes. "That special delivery letter," and Dick pointed to it. "Wasn't here last night," he went on, "for I tied Blackie to that tree before I staked him out. What is it?" Bud rolled out of his blanket, and took the piece of paper from the tree. "It's a warning!" he announced. "A warning?" cried Nort and Dick, while Buck Tooth began making a fire. "Yes," went on the boy rancher. "Here's what it says: "'Don't take no more watter frum Pocut River if you want to stay healthy!'" "Whew!" whistled Dick. "What does that mean?" "Just what I'd like to know," said Bud, and then all three boys started, and looked toward the upward slope of the mountain, down which they had partly descended. For there came rolling toward them a mass of dirt and stones, indicating the approach of some one. CHAPTER IV A STRANGE REAPPEARANCE Characteristic it was of Bud Merkel, being a son of the west as he was, that his hand instinctively sought the leather holster whence protruded the grim, black handle of his .45. But he did not draw the weapon, nor did Nort or Dick pull theirs, which they had started to get out when they noted Bud's action. For Bud smiled when he had a glimpse of the newcomer, and Buck Tooth, who had glanced up from where he was making the fire, gave a grunt of welcome. "Babe!" exclaimed Nort, as he recognized the fat assistant foreman of Diamond X ranch. "Babe!" "Sure! Who'd you think it was?" came the smiling question. "Looks like you had an idea it might be one of them rustlers that made trouble when you fellers was here before! Eh? "Glad t' see you two _ex_-tenderfeet," and Babe Milton grinned broadly as he accented the _ex_, and held out a welcoming hand to Nort and Dick. "They said you was comin' back to Diamond X, but I sorter missed you--been out tryin' t' locate a bunch of strays," he confided to Bud, "an' I didn't have no luck! Glad to meet yo' all, though, powerful glad! 'Specially on account of that there coffee!" and he sniffed the air as he caught the aroma of the fragrant pot Buck Tooth was putting on to boil. "But what are you lads doing so far from Diamond X?" Babe went on, when they had moved over to the camp fire, the blaze of which was genially warm this cool morning on the mountain. "We aren't stopping there this trip," said Nort. "We're 'on our own,'" proceeded Bud. "I'm raising cattle in the old Buffalo Wallow Valley--Flume I call it now."