Here the expectation of Mr Fox Powys' arrival seems to have caused an auditory hallucination. In other cases of a similar nature the hallucination is visual, the percipient actually seeing the figure of the expected person. The authors of "Phantasms of the Living" give the following case as an "interesting puzzle" and invite the reader to decide whether or not it affords evidence for telepathy. The narrator, Mr W. A. S., is described as an unexceptionable witness who has never had any other visual hallucination. "January 14th, 1883. "In the month of April 1871, about two o'clock in the afternoon, I was sitting in the drawing-room of my father's house in Pall Mall. The window of the room fronted south; and the sun was shining brightly in at the window. I was sitting between the fireplace and the window, with my back to the light; my niece was sitting on the opposite side of the fireplace; and opposite me at the farther corner of the room was a door partly open, leading directly to the staircase. I saw what I supposed at the first moment to be dirty soapy water running in at the door; and I was in the act of jumping up to scold the housemaid for upsetting the water, when I saw that the supposed water was the tail or train of a lady's dress. The lady glided in backwards, as if she had been slid in on a slide, each part of her dress keeping its place without disturbance. She glided in till I could see the whole of her, _except the tip of her nose, her lips and the tip of her chin, which were hidden by the edge of the door_. Her head was slightly turned over her shoulder, and her eye also turned, so that it appeared fixed upon me. She held her arm, which was a very fine one, in a peculiar way, as if she were proud of it. She was dressed in a pale blue evening dress, worked with white lace. I instantly recognised the figure as that of a lady whom I had known some twenty-five years or more before; and with whom I had frequently danced. She was a bright, dashing girl, a good dancer, and we were good friends, but nothing more. She had afterwards married and I had occasionally heard of her, but do not think I had seen her for certainly more than twenty or twenty-five years. She looked much as I used to see her--with long curls and bright eyes, but perhaps something stouter and more matronly.