the officer who had asked the question darted on. Suddenly there was a deafening roar. The machine, with its human freight, lifted in an upburst of smoke, and sank down a mass of wreckage and death.
Hartman was jubilant. “Well done! well done!” he was repeating, over and over, in a whisper. “The proletariat gets its lesson to-day, but it gives one, too.”
Police were running for the spot. Also, another patrol machine had halted. As for myself, I was in a daze. The suddenness of it was stunning. How had it happened? I knew not how, and yet I had been looking directly at it. So dazed was I for the moment that I was scarcely aware of the fact that we were being held up by the police. I abruptly saw that a policeman was in the act of shooting Hartman. But Hartman was cool and was giving the proper passwords. I saw the levelled revolver hesitate, then sink down, and heard the disgusted grunt of the policeman. He was very angry, and was cursing the whole secret service. It was always in the way, he was averring, while Hartman was talking back to him and with fitting secret-service pride explaining to him the clumsiness of the police.