When the ghostly presence had written in my sketch-book, the characters had disappeared after an interval of three hours. On this occasion, as nearly as I could calculate, the writing had vanished in one hour only. Reverting to the conversation which I had held with Mrs. Van Brandt when we met at Saint Anthony's Well, and to the discoveries which followed at a later period of my life, I can only repeat that she had again been the subject of a trance or dream, when the apparition of her showed itself to me for the second time. As before, she had freely trusted me and freely appealed to me to help her, in the dreaming state, when her spirit was free to recognize my spirit. When she had come to herself, after an interval of an hour, she had again felt ashamed of the familiar manner in which she had communicated with me in the trance--had again unconsciously counteracted by her waking-will the influence of her sleeping-will; and had thus caused the writing once more to disappear, in an hour from the moment when the pen had traced (or seemed to trace) it. This is still the one explanation that I can offer. At the time when the incident happened, I was far from being fully admitted to the confidence of Mrs. Van Brandt; and I was necessarily incapable of arriving at any solution of the mystery, right or wrong. I could only put away the letter, doubting vaguely whether my own senses had not deceived me. After the distressing thoughts which Miss Dunross's letter had roused in my mind, I was in no humor to employ my ingenuity in finding a clew to the mystery of the vanished writing. My nerves were irritated; I felt a sense of angry discontent with myself and with others. "Go where I may" (I thought impatiently), "the disturbing influence of women seems to be the only influence that I am fated to feel." As I still paced backward and forward in my room--it was useless to think now of fixing my attention on a book--I fancied I understood the motives which made men as young as I was retire to end their lives in a monastery. I drew aside the window curtains, and looked out. The only prospect that met my view was the black gulf of darkness in which the lake lay hidden. I could see nothing; I could do nothing; I could think of nothing. The one alternative before me was that of trying to sleep. My medical knowledge told me plainly that natural sleep was, in my nervous condition, one of the unattainable luxuries of life for that night. The medicine-chest which Mr. Dunross had placed at my disposal remained in the room. I mixed for myself a strong sleeping draught, and sullenly took refuge from my troubles in bed.