"I'd give a heap to know if Peg Grant meant business when he said we were riding to a fall if we thought we were the only pebbles on the beach," Bob remarked.

"Oh!" replied Frank, "I reckon he's going to make a try to solve that Thunder Mountain puzzle. But just think of a tenderfoot like Peg let loose on that fierce slope up yonder; will you?"

"Perhaps he's here already," suggested Bob.

"Wouldn't be one bit surprised," Frank continued, readily enough, as though he considered that a foregone conclusion anyway. "He and his cronies had time enough, unless Peg changed his mind. He might be wondering what happened to you, and thinking how the X-bar-X ranch would be safer, in case some of our boys chased after him to give him the tar and feathers he deserves for playing such a mean trick."

"But supposing they did come," said Bob; "Peg and Spanish Joe, and that other treacherous cowboy you told me about; we're pretty apt to meet up with them if we go prowling around here for the next few days."

"Just so, and we'll try to mind our business all the time," remarked Frank; and then his eyes flashed a little as he continued: "but if they try any of their ugly little tricks on us, Bob, they're likely to get hurt."

"I'm with you there, Frank," the other added, shutting his teeth in a determined way. "I can stand a certain amount of fun, and, I hope, take it the right way. Your cow punchers said that when they hazed me, you know. But I certainly do object to any such rough-house business as fastening a poisoned thorn under a fellow's saddle."

"That game has cost more than a few people their lives," Frank declared vehemently. "Cowmen draw the line at it. You noticed how angry old Hank became when he heard about that same thing. But your horse seems to be getting on all right, Bob."

"Sure he does. That ointment made by old Hank's like magic. Domino won't suffer much from that jab. But that was a bully good supper all right, and I don't care how soon we repeat it," he concluded with a laugh.

Finally both lads lay down to secure such rest as they needed after a long and tiresome day.