This was a lonesome post to occupy (I said), and it had riveted my attention when I looked down from up yonder.  A visitor was a rarity, I should suppose; not an unwelcome rarity, I hoped?  In me, he merely saw a man who had been shut up within narrow limits all his life, and who, being at last set free, had a newly awakened interest in these great works.  To such purpose I spoke to him; but I am far from sure of the terms I used, for, besides that I am not happy in opening any conversation, there was something in the man that daunted me.

He directed a most curious look towards the red light near the tunnel’s mouth, and looked all about it, as if something were missing from it, and then looked at me.

That light was part of his charge?  Was it not?

He answered in a low voice, “Don’t you know it is?”

The monstrous thought came into my mind, as I perused the fixed eyes and the saturnine face, that this was a spirit, not a man.  I have speculated since whether there may have been infection in his mind.

In my turn, I stepped back.  But in making the action, I detected in his eyes some latent fear of me.  This put the monstrous thought to flight.

“You look at me,” I said, forcing a smile, “as if you had a dread of me.”

“I was doubtful,” he returned, “whether I had seen you before.”

“Where?”

He pointed to the red light he had looked at.

“There?” I said.

Intently watchful of me, he replied (but without sound), “Yes.”

“My good fellow, what should I do there?  However, be that as it may, I never was there, you may swear.”

“I think I may,” he rejoined.  “Yes, I am sure I may.”

His manner cleared, like my own.  He replied to my remarks with readiness, and in well-chosen words.  Had he much to do there?  Yes; that was to say, he had enough responsibility to bear; but exactness and watchfulness were what was required of him, and of actual work—­manual labor—­he had next to none.  To change that signal, to trim these lights, and to turn this iron handle now and then, was all he had to do under that head.  Regarding those many long and lonely hours of which I seemed to make so much, he could only say that the routine of his life had shaped itself into that form, and he had grown used to it.  He had taught himself a language down here,—­if only to know it by sight, and to have formed his own crude ideas of its pronunciation, could be called learning it.  He had also worked at fractions and decimals, and tried a little algebra; but he was, and had been as a boy, a poor hand at figures.  Was it necessary for him, when on duty, always to remain in that channel of damp air, and could he never rise into the sunshine from between those high stone walls?  Why, that depended upon times and circumstances.  Under some conditions there would be less upon the Line than under others, and the same held good as to certain hours of the day and night.  In bright weather, he did choose occasions for getting a little above these lower shadows; but, being at all times liable to be called by his electric bell, and at such times listening for it with redoubled anxiety, the relief was less than I would suppose.