not occur to him, or, possibly, the continued stately advance of the steam roller in his direction disconcerted him. At all events the boys became mere flying shapes in the distance before the officer took action. When he did he stepped nimbly out of the path of the roller and remarked stentoriously as it rumbled by:
"Hi, there! What's this? Where you goin' with that roller, hey?"
As there was no response he went after it, discovering to his surprise that the reason he had received no reply was that there was no one there to offer it! What occurred subsequently would have hugely diverted a spectator had there been one, which there wasn't. On and on went the roller, moving further and further toward the sidewalk, and on and on trotted the policeman, making ineffectual efforts to board it. He had a very healthy respect for engines and wasn't at all certain that this one might not resent his company. At last, however, desperation gave him courage and he stumbled onto the platform and began to pull, push or twist every movable thing he could lay hands on. The results were disconcerting. A cloud of white steam burst forth from somewhere with an alarming rush and hiss, a shrill, excruciating whistle
shattered the night and a tiny stream of very hot
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