He had a piece of new music for me to-night, and we fell to work with piano and flute soon after my father’s exit. It was not difficult. The songs and duets that followed were familiar to us both. We chatted by the glowing grate when we left the piano—gayly and lightly, of nothing in particular—the inconsequent gossip of two old and intimate acquaintances that called for no effort from either. I mention this to show that I carried a careless spirit and a light heart with me, as I went off in the direction of my bedroom, having extinguished the hanging lamp in the hall, and taking one of the lamps from the parlor to light myself bedward. It was a big, square Colonial house, with much waste of space in the matter of halls and passages. The entrance-hall on the first floor was virtually a reception-room, and nearly as large as any apartment on that level. It was cut across the left side by an archway, filled with Venetian blinds and door. Beyond these was a broad, easy stairway, dropping, by a succession of landings, to the lower from the upper story. Directly opposite the front door was a second and narrower arch, the door in which was, likewise, of Venetian slats. This led to the rooms at the back of the house. The plan of the second floor was the same. On this eventful night I passed through the smaller archway, closing the door behind me. It had a spring latch that clicked into place as I swung it to. The bedroom I shared with my sister, who was not at home that night, was directly across the passage from that occupied by our parents. A line of light under their door proved that they were still up, and I knocked. “Come in!” called both, in unison. My mother, wrapped in her dressing-gown, lay back in her rocking-chair, her book closed upon her finger. My father had laid aside his coat, and stood on the rug, winding his watch. “I was hoping that you would look in,” he said. “I wanted to ask what that new piano-and-flute piece is. I like it!” We exchanged a few sentences on the subject; I kissed both good-night, and went out into the hall, humming, as I went, the air that had caught his fancy. The lamp in my hand had two strong burners. Gas had not then been introduced into private dwellings in Richmond. We used what was sold as “burning fluid,” in illuminating our houses—something less gross than camphene or oil, and giving more light than either. I carried the lamp in front of me, so that it threw a bright light upon the door across the passage, here a little over six feet wide. As I shut the door of my mother’s room, I saw, as distinctly as if by daylight, a small woman in gray start out of the opposite door, glide noiselessly along the wall, and disappear at the Venetian blinds giving upon the big front hall. I have reviewed that moment and its incident a thousand times, in the effort to persuade myself that the apparition was an optical illusion or a trick of fancy.