"Trust me!" said Peter with an answering grin; but he turned and looked after the boys a trifle soberly.

Bobby's escapade with the revolver was on a different plane from such mild misdemeanours as abstracting fishing bait from the kitchen. Peter felt keenly that Mr. Carter ought to know, but he shrank from the idea of telling. For one thing, he hated tale-bearing; for another, he had a presentiment as to the direction Bobby's punishment would take.

As an indirect result of his thirteenth birthday, the boy was to have a new horse—not another pony, but a grown-up horse—provided always that he was good. Mr. Carter, being occupied with business out of town, had not been able to give the matter his immediate attention; and poor Bobby had been dwelling on the cold heights of virtue for nearly a month. He had undergone, a week or so before, a mild attack of three-day measles which he had borne with a sweet gentleness quite foreign to his nature. Peter had openly scouted the doctor's diagnosis of the case.

"Rats!" he remarked to Annie, after viewing the boy's speckled surface. "That ain't measles. It's his natural badness working out. I knew it weren't healthy for him to be so good. If Mr. Carter don't make up his mind about that horse pretty soon the boy'll go into a decline."

But at last the question was on the point of being settled. Mr. Carter, having visited every horse dealer in the neighbourhood, had, in his carefully methodical manner, almost made up his mind. The choice was a wiry little mustang, thin-limbed and built for running; he could give even Blue Gypsy some useful lessons in speed, and she had a racing pedigree four generations long. Peter had fallen in love with the mustang; he wanted it almost as much as Bobby. And he realized that these next few days were a critical period; if the boy were discovered in any black offence, the horse would be postponed until his fourteenth birthday. His father had an unerring sense of duty in the matter of punishments.

It was Saturday and Mr. Carter would be out on the noon train. Peter drove to the station to meet him, still frowning over the question of Bobby and the revolver. He finally decided to warn the boy; there would be time enough to speak if the offence were repeated. Mr. Carter proved to be in an unusually genial frame of mind. He chatted all the way out on matters pertaining to the stables; and as they drew up at the porte-cochère he paused to ask:

"Ah, Peter, about this new mustang for Master Bobby, what do you think?"

"He's a fine horse, sir, though I suspicion not too well broke. But he's got a good pair o' legs—I should say two pair, sir—an' sound wind. That's the main thing. We can finish his trainin' ourselves."

"Then you advise me to get him?"