"I guess you've got into the wrong pew, Mr. Hawley," remarked Matt. "I haven't any desire to help you shake plum-trees, and if I ever went into racing for a business you're the last man I'd pick out to see me through." "Ain't my money as good as anybody else's?" flared Hawley, losing some of his amiability. "I'm not talking about money. What I want to say is that you and I can't hitch up worth a cent." "That's how you stack up, is it?" returned Hawley. "Well, look here"--he drew a roll of bills out of his pocket--"there's five hundred in that roll and it's all yours if you go to Denver to-morrow and stay there for a month." Matt had a thought just then that touched him like a live wire. "You're trying to keep me out of that Phoenix-Prescott contest, Mr. Hawley," said he, with a square look into the gambler's eyes. "What sort of an ax have you got to grind, anyhow?" Dirk Hawley got up, shoved the roll of bills into his pocket, and moved to the door. "You're too wise for your own good, my bantam," he sneered. "Perry pretty near hits it off in what he tells me about you. If you think you're going to ride in that bicycle-race you've got another guess coming. Just paste that in your little hat and keep your eye on it." Then, with an angry splutter, Dirk Hawley let himself out of the room and slammed the door. A few moments later Matt heard his big motor-car puffing away from the curb. CHAPTER X. A CHALLENGE. For several days Matt pondered over that queer talk he had had with Dirk Hawley. All he could make out of it only left him more mystified than ever. It seemed certain that Hawley had mentioned putting Matt into training for big racing-events merely as a ruse to get him to Denver. The gambler wanted to keep him out of the Phoenix-Prescott race, and was willing to spend $500 in order to do so. But what was his reason? Even though Dirk Hawley had plenty of money he would not let go of $500 unless he expected to get value-received for it. There was a possibility that, as a friend of Dace Perry's, Hawley wanted to get Matt out of the race in order to give Perry a show. However, Perry would hardly spend $500 in order to win a $250 motor-cycle; and certainly the gambler would not put up the money for him. It all looked very dark and very mysterious to Matt. The gambler's threat did not bother him in the least; and he was so self-reliant that he did not take the matter of Hawley's visit to the major. Had he, at that time, the remotest inkling of what Hawley's real purpose was, he would have acted differently and told the major everything. But when this knowledge came to Matt, events happened which made it impossible for him to go to Major Woolford and lay bare the gambler's scheme.