"He was fond of chemistry, I believe," said Ronald, "and of experimentalizing. Your question brings to my mind a conversation which took place at _table d'hôte_ when we were in Chamounix. It was on the subject of anæsthetics, and the effect of certain poisonous chemicals upon different temperaments. I fancy that Mr. Nisbet was at first disinclined to take part in the discussion, but a remark escaped him which was disputed by a person at the table, and he grew warm, and spoke with authority upon the subject, with which he was evidently familiar. It was the only occasion upon which I heard him speak freely, and I think he was not pleased at having been drawn into the conversation, for he stopped suddenly in the middle of a sentence, and left the room. Beatrice told me afterward that he was very clever in those matters, and that on occasions when she had passed a sleepless night from toothache or some other ailment, he had given her a draught which produced a good night's rest. I recollect now that she related an incident which strangely interested me. She had been restless and in pain for two or three days, and her stepfather prescribed for her. When she awoke in the morning her pain had passed away, and she was quite well physically, but a singular thing happened to her. She had lost her memory. She could not recall what happened yesterday or the day before, and she said with a smile that it was with difficulty she remembered her name. Gradually her power of memory came back to her, and she recollected everything perfectly." "Did this occur to her again, Mr. Elsdale?" "So far as I know it occurred only once. I suppose you will not tell me why you are asking these questions, Mr. Emery?" "Not yet; and I am going to ask you two more. Do you believe that you will ever see the young lady again?" "See her? No. How can I? You forget that I am blind. But I have the firmest belief that I shall come into association with her again." "In life?" "In life," he replied gravely. "My other question is this. On former occasions, when we were in each other's company, your uncle being present, you have had an impression that there was a dog, or some other living creature, in the room. Have you such an impression now?" "No." (I may mention that the apparition of the cat was not visible to me.) "I know, Mr. Emery, that you must think I am laboring under some hallucination, but I cannot help that. You must take me as you find me, and make the best, and not the worst, of me. I have an engagement with a pupil, and you will excuse me now."