“I’ll make sure to be ready for him here,” the stockman continued. “It would please me first class to catch the house-burner in the act. Of course, now that we believe Mendoza is here for some evil purpose, we could jump on him without warning. That might suit most people; but it’s always been my plan to let a rascal go the length of his rope before nabbing him.”

“I told Bob that, Dad,” remarked Frank. “But will you let all the boys in on the game?”

“Not at all, Frank. I might tell several who can be trusted to keep a still tongue in their heads; for we shall need a certain amount of help here to watch the house on all sides, and get the fellow just as he strikes his match. Old Hank Coombs came in just before you did, and is around. Of course I shall count on him, as well as on Ted Conway, Scotty and Jeff Davis.”

“But you will let us sit up with the bunch, Dad; after bringing in the news you wouldn’t shut us off, would you?” Frank asked.

“It wouldn’t seem right, I admit, after all the good work you two boys have done,” remarked the stockman; “though you’ll have to promise to hold back, and let some of the husky men do the

actual hard work. I can’t afford to take the chances of my boys getting hurt by such a desperate rascal.”

Of course both of them readily promised, and after some further conversation Frank and his chum hurried out. The coming of Old Hank Coombs to the ranch was an event that greatly pleased Frank. Much that he knew about life in the open had come through the kindly instruction of the veteran cow puncher and hunter; and the boy could look back to many a happy night spent with old Hank beside a fire somewhere out on the plains, or in the mountains.

Circle Ranch was a bustling hive just then. Scores of strangers were apt to visit the place during the several days that the drive and the round-up were on, interested in the great event. Men representing big papers and magazines in the East had come to see how these things were conducted; for the stock raising business in the Southwest was soon going into a decline, because farms were being taken up everywhere, under the wonderful new system of irrigation that was being put into practice in many localities.

After supper there was heard the sound of merry music. Some of the boys played the mandolin or banjo; others sang; and a few even tried to dance with their customary vigor, though weariness compelled them to speedily abandon this form of hilarity.

Colonel Haywood had carried out all his quickly-laid plans for the campaign, looking to the arrest of the rustler. He had sent a reliable man to the spring-hole where the cattle drank, with strict orders as to what he should do if anyone came and acted suspiciously during the night. No mercy was to be shown a man who would descend to such a pass as to try and poison an entire herd of cattle, just to have revenge on the man who had broken up his unlawful trade.