April 7. Have stayed away as I said. It is a pity to ruin such an interesting investigation, but it would be a greater pity still to ruin my life, and I KNOW that I cannot trust myself with that woman. 11 P. M. God help me! What is the matter with me? Am I going mad? Let me try and be calm and reason with myself. First of all I shall set down exactly what occurred. It was nearly eight when I wrote the lines with which this day begins. Feeling strangely restless and uneasy, I left my rooms and walked round to spend the evening with Agatha and her mother. They both remarked that I was pale and haggard. About nine Professor Pratt-Haldane came in, and we played a game of whist. I tried hard to concentrate my attention upon the cards, but the feeling of restlessness grew and grew until I found it impossible to struggle against it. I simply COULD not sit still at the table. At last, in the very middle of a hand, I threw my cards down and, with some sort of an incoherent apology about having an appointment, I rushed from the room. As if in a dream I have a vague recollection of tearing through the hall, snatching my hat from the stand, and slamming the door behind me. As in a dream, too, I have the impression of the double line of gas-lamps, and my bespattered boots tell me that I must have run down the middle of the road. It was all misty and strange and unnatural. I came to Wilson's house; I saw Mrs. Wilson and I saw Miss Penclosa. I hardly recall what we talked about, but I do remember that Miss P. shook the head of her crutch at me in a playful way, and accused me of being late and of losing interest in our experiments. There was no mesmerism, but I stayed some time and have only just returned. My brain is quite clear again now, and I can think over what has occurred. It is absurd to suppose that it is merely weakness and force of habit. I tried to explain it in that way the other night, but it will no longer suffice. It is something much deeper and more terrible than that. Why, when I was at the Mardens' whist-table, I was dragged away as if the noose of a rope had been cast round me. I can no longer disguise it from myself. The woman has her grip upon me. I am in her clutch. But I must keep my head and reason it out and see what is best to be done. But what a blind fool I have been! In my enthusiasm over my research I have walked straight into the pit, although it lay gaping before me. Did she not herself warn me? Did she not tell me, as I can read in my own journal, that when she has acquired power over a subject she can make him do her will? And she has acquired that power over me. I am for the moment at the beck and call of this creature with the crutch. I must come when she wills it. I must do as she wills. Worst of all, I must feel as she wills. I loathe her and fear her, yet, while I am under the spell, she can doubtless make me love her.