The following is an example. A very dear friend of mine was taken ill shortly before Christmas. No one at the time suspected there was anything serious the matter with her, although her health of late had been far from good. I happened to be staying in the house just then, and found, that for some reason or other, I could not sleep. I do not often suffer from insomnia, so that the occurrence struck me as somewhat extraordinary. My bedroom opened on to a large, dark landing. In one corner of it stood a very old grandfather's clock, the ticking of which I could distinctly hear when the house was quiet. For the first two or three nights of my visit the clock was as usual, but, the night before my friend was taken ill, its ticking became strangely irregular. At one moment it sounded faint, at the next moment, the reverse; now it was slow, now quick; until at length, in a paroxysm of curiosity and fear, I cautiously opened my door and peeped out. It was a light night, and the glass face of the clock flashed back the moonbeams with startling brilliancy. A grim and subdued hush hung over the staircases and landings. The ticking was now low; but as I listened intently, it gradually grew louder and louder, until, to my horror, the colossal frame swayed violently backwards and forwards. Unable to stand the sight of it any longer, and fearful of what I might see next, I retreated into my room, and, carefully locking the door, lit the gas, and got into bed. At three o'clock the ticking once again became normal. The following night the same thing occurred, and I discovered that certain other members of the household had also heard it. My friend rapidly grew worse, and the irregularities of the clock became more and more pronounced, more and more disturbing. Then there came a morning, when, between two and three o'clock, unable to lie in bed and listen to the ticking any longer, I got up. An irresistible attraction dragged me to the door. I peeped out, and there, with the moonlight concentrated on its face as before, swayed the clock, backwards and forwards, backwards and forwards, slowly and solemnly; and with each movement there issued from within it a hollow, agonised voice, the counterpart of that of my sick friend, exclaiming, "Oh dear! Oh dear! It is coming! It is coming!"