The farmer's family, including the son who was a deputy sheriff, was glad to see Tom. Jed said he had "been on the job" ever since the mysterious robbery of Tom had taken place, but though he had seen many red automobiles he had no trace of the three men. From Dunkirk Tom went back over the route he had taken in going from Pompville to Centreford, and made some inquiries in the neighborhood of the church shed, where he had taken shelter. The locality was sparsely settled, however, and no one could give any clues to the robbers. The young inventor next made a trip over the lonely, sandy road, where he had met with the tramp, Happy Harry. But there were even fewer houses near that stretch than around the church, so he got no satisfaction there. Tom spent the night at a country inn, and resumed his search the next morning, but with no results. The men had apparently completely disappeared, leaving no traces behind them. "I may as well go home," thought Tom, as he was riding his motor-cycle along a pleasant country road. "Dad may be worried, and perhaps something has turned up in Shopton that will aid me. If there isn't, I'm going to start out again in a few days in another direction." There was no news in Shopton, however. Tom found his father scarcely able to work, so worried was he over the loss of his most important invention. Two weeks passed, the young machinist taking trips of several days' duration to different points near his home, in the hope of discovering something. But he was unsuccessful, and, in the meanwhile, no reassuring word was received from the lawyers in Washington. Mr. Crawford wrote that no move had yet been made by the thieves to take out patent papers, and while this, in a sense, was some aid to Mr. Swift, still he could not proceed on his own account to protect his new motor. All that could be done was to await the first movement on the part of the scoundrels. "I think I'll try a new plan to-morrow, dad," announced Tom one night, when he and his father had talked over again, for perhaps the twentieth time, the happenings of the last few weeks. "What is it, Tom?" asked the inventor. "Well, I think I'll take a week's trip on my machine. I'll visit all the small towns around here, but, instead of asking in houses for news of the tramp or his confederates, I'll go to the police and constables. I'll ask if they have arrested any tramps recently, and, if they have, I'll ask them to let me see the 'hobo' prisoners." "What good will that do?" "I'll tell you. I have an idea that though the burglar who got in here may not be a regular tramp, yet he disguises himself like one at times, and may be known to other tramps. If I can get on the trail of Happy Harry, as he calls himself, I may locate the other men. Tramps would be very likely to remember such a peculiar chap as Happy Harry, and they will tell me where they had last seen him. Then I will have a starting point."