which I was passing. And the sense of hearing filled in the details. Now the hoot of a tug's whistle told of proximity to the river. A sudden and brief hollow reverberation announced the passage under a railway arch (which, by the way, happened several times during the journey); and, when I heard the familiar whistle of a railway-guard followed by the quick snorts of a skidding locomotive, I had as clear a picture of a heavy passenger-train moving out of a station as if I had seen it in broad daylight.
I had just finished my pipe and knocked out the ashes on the heel of my boot, when the carriage slowed down and entered a covered way—as I could tell by the hollow echoes. Then I distinguished the clang of heavy wooden gates closed behind me, and a moment or two later the carriage door was unlocked and opened. I stepped out blinking into a covered passage paved with cobbles and apparently leading down to a mews; but it was all in darkness, and I had no time to make any detailed observations, as the carriage had drawn up opposite a side door which was open and in which stood a woman holding a lighted candle.
"Is that the doctor?" she asked, speaking with a rather pronounced German accent and shading the candle with her hand as she peered at me.
I answered in the affirmative, and she then exclaimed:
"I am glad you have come. Mr. Weiss will be so relieved. Come in, please."
