A miner, a plate-layer--in fact, anyone whose avocations took them underground--would have laughed to scorn these childish fears; but the situation was so new to me, and also I must confess that I am naturally of a nervous, imaginative turn of mind. Still, I was vexed with myself for my cowardly feelings, and started on my walk again, trying not to think of these gloomy surroundings, but drew a picture of my home, wondering how Mary was, if she was well enough to be told of my coming, and was looking out for me. Then I dwelt upon the satisfaction with which I should enter the express, at the junction, feeling that the troubles of the evening had not been in vain. After a while, when these thoughts were somewhat exhausted, and I felt my mind returning to the horrors of the present moment, I tried to look at it all from a different point of view, telling myself that it was an adventure which I should live to pride myself upon. Then I recalled to mind things I had read of subterranean passages, and naturally stories of the Catacombs presented themselves to me, and I thought how the early Christians had guided themselves through those dim corridors by means of a line or string; the fantastic notion came to me that I was in a like predicament, and the line I was to follow was the steel rail at my feet. For awhile this thought gave me courage, making me realize how straight the way was, and that I had only to go on and on until the goal was reached. I walked for, perhaps, twenty minutes or half an hour, sometimes passing a small grating for ventilation; but they were so choked by weeds and rubbish that they gave little light and less air. Walking quickly through a dark place, one has the feeling that unseen objects are close at hand, and that at any moment you may come in sharp contact with them. It was this feeling, at least, which made me as I went along continually put out my hand as if to ward off a blow, and suddenly, while my right foot still rested on the smooth steel rail, my left hand struck against the wall of the tunnel. As my fingers grated on the rough brick a new terror took possession of me--or at least, if not a new terror, one of the fears which had haunted me at the outset rushed upon me with redoubled force.