hadn't got the safe open before you came down and disturbed me. I'm after money, naturally."
"No, you're not!" exclaimed Tom.
"What's that?" and the man seemed surprised.
"No, you're not!" went on Tom, and he held his rifle in readiness. "You're after the patent papers and the model of the turbine motor. But it's gone. Your confederates got it away from me. They probably haven't told you yet, and you're still on the hunt for it. You'll not get it, but I've got you."
"So I see," admitted Happy Harry, and he spoke with some culture. "If you don't mind," he went on, "would you just as soon move that gun a little? It's pointing right at my head, and it might go off."
"It is going off—very soon!" exclaimed Tom grimly, and the tramp started in alarm. "Oh, I'm not going to shoot you," continued the young inventor. "I'm going to fire this as an alarm, and the engineer will come in here and tie you up. Then I'm going to hand you over to the police. This rifle is a repeater, and I am a pretty good shot. I'm going to fire once now, to summon assistance, and if you try to get away I'll be ready to fire a second time, and that won't be so comfortable for you. I've caught you, and I'm going
