I was restless and in no mood for bed and mourned the lack of variety in my grandfather’s library. I moved about from shelf to shelf, taking down one book after another, and while thus engaged came upon a series of large volumes extra-illustrated in water-colors of unusual beauty. They occupied a lower shelf, and I sprawled on the floor, like a boy with a new picture-book, in my absorption, piling the great volumes about me. They were on related subjects pertaining to the French châteaux.

In the last volume I found a sheet of white note-paper no larger than my hand, a forgotten book-mark, I assumed, and half-crumpled it in my fingers before I noticed the lines of a pencil sketch on one side of it. I carried it to the table and spread it out.

It was not the bit of idle penciling it had appeared to be at first sight. A scale had evidently been followed and the lines drawn with a ruler. With such trifles my grandfather had no doubt amused himself. There was a long corridor indicated, but of this I could make nothing. I studied it for several minutes, thinking it might have been a tentative sketch of some part of the house. In turning it about under the candelabrum I saw that in several places the glaze had been rubbed from the paper by an eraser, and this piqued my curiosity. I brought a magnifying glass to bear upon the sketch. The drawing had been made with a hard pencil and the eraser had removed the lead, but a well-defined imprint remained.

I was able to make out the letters N. W. ¾ to C.— a reference clearly enough to points of the compass and a distance. The word ravine was scrawled over a rough outline of a doorway or opening of some sort, and then the phrase:

THE DOOR OF BEWILDERMENT

Now I am rather an imaginative person; that is why engineering captured my fancy. It was through his trying to make an architect (a person who quarrels with women about their kitchen sinks!) of a boy who wanted to be an engineer that my grandfather and I failed to hit it off. From boyhood I have never seen a great bridge or watched a locomotive climb a difficult hillside without a thrill; and a lighthouse still seems to me quite the finest monument a man can build for himself. My grandfather’s devotion to old churches and medieval houses always struck me as trifling and unworthy of a grown man. And fate was busy with my affairs that night, for, instead of lighting my pipe with the little sketch, I was strangely impelled to study it seriously.

I drew for myself rough outlines of the interior of Glenarm House as it had appeared to me, and then I tried to reconcile the little sketch with every part of it.