Read it through once

And then, suddenly, came a face that he could not relate to the other faces. He caught but a flash of it, for his pacings had carried him to the farthest point of his beat, and it was in turning back to the hotel that he saw, in a group of typical countenances--the lank and weary, the round and surprised, the lantern-jawed and mild--this other face that was so many more things at once, and things so different. It was that of a young man, pale too, and half-extinguished by the heat, or worry, or both, but somehow, quicker, vivider, more conscious; or perhaps seeming so because he was so different. Archer hung a moment on a thin thread of memory, but it snapped and floated off with the disappearing face--apparently that of some foreign business man, looking doubly foreign in such a setting. He vanished in the stream of passersby, and Archer resumed his patrol.