Almost automatically, Mr. Billers yanked at the reins and the horses again went to the side of the road. But again no car went by. Again Mr. Billers looked behind. Again, to his astonishment, he saw that the roadway was clear. "Hanged if I didn't think I heard a horn!" exclaimed Mr. Billers, greatly puzzled, as he drove on again. "My ears must be goin' back on me." But in a few minutes the horn shrieked again. Frank and Joe, who were walking along the sidewalk, keeping abreast of the wagon so as not to miss the fun, chuckled as they saw Mr. Billers once more pull on the reins to guide the horses to the roadside. Then the farmer recollected how he had been fooled on the previous occasions and he looked quickly around. But there was no car in sight. Mr. Billers gazed down the roadway for a long time. Then he sighed, with the air of one whose patience has been long tried. "Must be somethin' the matter with my ears," he muttered, and drove on. At this moment a luxurious sedan swept around a corner and drew up close behind the wagon. There was a chauffeur at the wheel and he sounded his horn impatiently, for the road was narrow and he was unable to get past. Lem Billers smiled darkly to himself and paid no attention. "There it goes again," he grumbled. "I _must_ be hearin' things. Hang me if I'll turn out any more when there ain't no car there to turn out for." The wagon continued in the center of the road. The chauffeur of the car glared at Lem Billers' back and sounded the horn again. Still the farmer paid no attention. Chet, limp with laughter, almost rolled off the wagon. Frank and Joe could control their mirth no longer, and leaned against a telephone post with shouts of glee. The chauffeur, believing that the boys were laughing at him because he could not get past, became purple with anger. He sounded the horn again and again, and finally, when Lem Billers obstinately refused to pay any attention, he looked wildly about for a policeman. As luck would have it, Constable Con Riley was ambling along Main Street at that moment, wondering if it would soon be supper time and hoping his wife would serve corned beef and cabbage that evening. He was aroused from his trance by the chauffeur, who brought the sedan to a stop and ran over to him. "Officer--arrest that man!" roared the chauffeur, pointing to Lem Billers. "What for?" demanded Con, taking off his helmet and scratching his head. "Obstructing the traffic. He won't let me pass. I've been sounding my horn for the last five minutes, and he won't let me go past." "Oh, ho!" said Constable Riley. "He can't get away with that. Not while Con Riley's on the beat." And with that he ran out into the road, shouting to Lem Billers to stop. At the constable's command, the farmer halted his team and gazed in amazement at the chauffeur and the officer as they came running up to him. "Why won't you let him pass?" demanded the constable.