The pent black smoke from the tunnel rolled in a thick cloud about them, stifling them. The girl, dazed with the roar and blinded by the smoke, could only cling to her protector. For an instant they felt as if they were about to be drawn into the awful power of the rushing monster. Then it had passed, and a roar of silence followed, as if they were suddenly plunged into a vacuum. Gradually the noises of the world began again: the rumble of a trolley-car on the bridge; the "honk-honk" of an automobile; the cry of a newsboy. Slowly their breath and their senses came back. The man's first thought was to get out of the cut before another train should come. He grasped his companion's arm and started up the steep embankment, realizing as he did so that the wrist he held was slender, and that the sleeve which covered it was of the finest cloth. They struggled up, scarcely pausing for breath.