"It might be," said the fellow called Staver. "If I thought it was a gold strike I'd follow 'em," announced Sol Blugg. "Tom Dillon allers was a good one at strikes, an' so was Abe Blower. They know enough to keep away from anything thet looks like a wildcat. I'm a-goin' to look into this," he concluded. And after that the Blugg crowd kept close watch on Dave and his friends. The departure was made from Butte about noon of the next day. It was clear and warm, with a gentle breeze blowing from the west. "We might have taken a train for the first forty miles," remarked Tom Dillon. "But it wouldn't have helped us a great deal, for we'd have to side-track for ten miles. We'll go the old way--the way we went afore there was any railroads." "There must be a lot of mines in Montana," remarked Phil, as they rode out of Butte. "Somebody told me there had been over fifteen thousand minin' claims staked and recorded," answered the old miner. "O' course, lots of 'em ain't never been developed. But a good many of 'em have." "They must produce a lot of gold," said Dave. "Yes, lad, the output runs up into the millions every year. Oh, a good mine is a bonanza!" added Tom Dillon, emphatically. "Then I trust we locate the Landslide Mine, and that it proves a bonanza," returned Roger, eagerly. On the way they passed mine after mine, and the boys were much interested in watching the process of getting out ore, and also in the work of the huge quartz-crushers. Whenever they passed a mine there would be sure to be somebody to wave a friendly hand to Tom Dillon. "He certainly is well known," whispered Roger to Dave. "Yes, and we were mighty lucky to fall in with him--after missing that Abe Blower," was the reply. It was not until about five o'clock in the afternoon that they reached a small settlement known as Robby's. Here they rested and had supper. They inquired about Abe Blower and his party, but could find out nothing concerning them. "They must have gone around by Tilton," said Tom Dillon. "That's just as good a trail and about as short. We'll hear from them at Black Cat Camp." It had been decided to push on to Black Cat Camp after supper, the old miner stating they ought to make the distance in three hours. Soon they were on the way again, just as the sun was sinking behind the great mountains in the west. "I hope Abe Blower stopped for the day at Black Cat Camp," said Roger to his chums. "I'd like to meet him and confront Link Merwell--and Job Haskers, too, if he is with them." "So would I," added Dave and Phil, in a breath. It was more agreeable riding, now that the heat of the day was over. At noon it had been very hot, but none of the boys had complained, although they had perspired freely. As it became darker they could see the twinkling lights of many a mining town and camp shining out in the mountains and the valleys below.