Everybody was a policeman at the Gap, I added; and, naturally, he still looked puzzled; but he began at once to question the boys about their studies, and, in an hour, he had his daily schedule mapped out and submitted to me. I had to cover my mouth with my hand when I came to one item--"Exercise: a walk of half an hour every Wednesday afternoon between five and six"--for the younger, known since at Harvard as the colonel, and known then at the Gap as the Infant of the Guard, winked most irreverently. As he had just come back from a ten-mile chase down the valley on horseback after a bad butcher, and as either was apt to have a like experience any and every day, I was not afraid they would fail to get exercise enough; so I let that item of the tutor pass. The tutor slept in my room that night, and my four brothers, the eldest of whom was a lieutenant on the police guard, in a room across the hallway. I explained to the tutor that there was much lawlessness in the region; that we "foreigners" were trying to build a town, and that, to ensure law and order, we had all become volunteer policemen. He seemed to think it was most interesting. About three o'clock in the morning a shrill whistle blew, and, from habit, I sprang out of bed. I had hardly struck the floor when four pairs of heavy boots thundered down the stairs just outside the door, and I heard a gasp from the startled tutor. He was bolt upright in bed, and his face in the moonlight was white with fear. "Wha--wha--what's that?" I told him it was a police whistle and that the boys were answering it. Everybody jumped when he heard a whistle, I explained; for nobody in town was permitted to blow one except a policeman. I guessed there would be enough men answering that whistle without me, however, and I slipped back into bed. "Well," he said; and when the boys lumbered upstairs again and one shouted through the door, "All right!" the tutor said again with emphasis: "Well!" Next day there was to be a political gathering at the Gap. A Senator was trying to lift himself by his own boot-straps into the Governor's chair. He was going to make a speech, there would be a big and unruly crowd, and it would be a crucial day for the Guard. So, next morning, I suggested to the tutor that it would be unwise for him to begin work with his pupils that day, for the reason that he was likely to be greatly interrupted and often. He thought, however, he would like to begin. He did begin, and within half an hour Gordon, the town sergeant, thrust his head inside the door and called the colonel by name.