Yes, this is the other turn of the screw.  And this is also what she meant, no doubt, when she said that I had not realized yet the power she has over me.  I look back at my account of my conversation with her, and I see how she declared that with a slight exertion of her will her subject would be conscious, and with a stronger one unconscious.  Last night I was unconscious.  I could have sworn that I slept soundly in my bed without so much as a dream.  And yet those stains tell me that I dressed, made my way out, attempted to open the bank windows, and returned.  Was I observed?  Is it possible that some one saw me do it and followed me home?  Ah, what a hell my life has become!  I have no peace, no rest.  But my patience is nearing its end.

10 P. M. I have cleaned my coat with turpentine.  I do not think that any one could have seen me.  It was with my screw-driver that I made the marks.  I found it all crusted with paint, and I have cleaned it.  My head aches as if it would burst, and I have taken five grains of antipyrine.  If it were not for Agatha, I should have taken fifty and had an end of it.

May 3.  Three quiet days.  This hell fiend is like a cat with a mouse.  She lets me loose only to pounce upon me again.  I am never so frightened as when every thing is still.  My physical state is deplorable—­ perpetual hiccough and ptosis of the left eyelid.

I have heard from the Mardens that they will be back the day after to-morrow.  I do not know whether I am glad or sorry.  They were safe in London.  Once here they may be drawn into the miserable network in which I am myself struggling.  And I must tell them of it.  I cannot marry Agatha so long as I know that I am not responsible for my own actions.  Yes, I must tell them, even if it brings every thing to an end between us.

To-night is the university ball, and I must go.  God knows I never felt less in the humor for festivity, but I must not have it said that I am unfit to appear in public.  If I am seen there, and have speech with some of the elders of the university it will go a long way toward showing them that it would be unjust to take my chair away from me.

10 P. M. I have been to the ball.  Charles Sadler and I went together, but I have come away before him.  I shall wait up for him, however, for, indeed, I fear to go to sleep these nights.  He is a cheery, practical fellow, and a chat with him will steady my nerves.  On the whole, the evening was a great success.  I talked to every one who has influence, and I think that I made them realize that my chair is not vacant quite yet.  The creature was at the ball—­unable to dance, of course, but sitting with Mrs. Wilson.  Again and again her eyes rested upon me.  They were almost the last things I saw before I left the room.  Once, as I sat sideways to her, I watched her, and saw that her gaze was following some one else.  It was Sadler, who was dancing at the time with the second Miss Thurston.  To judge by her expression, it is well for him that he is not in her grip as I am.  He does not know the escape he has had.  I think I hear his step in the street now, and I will go down and let him in.  If he will——­