I curbed my curiosity for five minutes more, then feeling convinced that I was again alone I stretched out my hand, took the book and, rising, carried it close to the window. There was still enough light to read by, and the leaves were open at pages 172-173. I had only read as far as page 137. I scanned them eagerly, and at once discovered that a mark had been made on the margin of page 172. A long cross had been placed against a paragraph. The mark was such as might have been made by a sharp finger-nail. The words marked were-- "I want to make the distinct assertion that a really existing thing never perishes, but only changes its form." To-day the mark is as clearly visible on the page as on the day it was made. I can form no conjecture as to who the entity was, but he certainly knew the contents of the book. No one watching the search could doubt that, or that he was desirous of impressing upon the readers of the book a certain fact stated therein, which must have previously attracted his attention. In the year 1900 we took a house for the winter months in the West End of London. It was a small house though joined on either side by great mansions, and once upon a time it had actually been a farmhouse standing amid smiling fields. It retained many relics of its ancient origin in fine oak paneling and quaint nooks and corners, and had been for many of its latter years the town residence of a man whose type had practically died out, the perfect type of our old English aristocracy. The bedroom I occupied was exceedingly comfortable and warm. The bed, placed against the wall, was exactly opposite to the fireplace, so that lying on my right side I looked straight at the fire and could see the whole room. I was constantly on the alert, as I knew how full of history such a house must be, but for several weeks I neither saw nor heard anything in the least unusual. One night, quite unexpectedly, a change occurred. I no longer had the room to myself. A stranger occupied it with me. It was a cold, snowy night, and I was lying in bed facing the fire and courting sleep, when I heard a sudden noise which was totally different to the sounds made by the dying fire. Take a large sheet of stiff writing paper in your hand and crush it up between your fingers and you will hear the sound I heard. Quite a loud and distinct noise if you happen to be in a very quiet room, at an hour when all the household has retired to bed. Naturally, I instantly opened my eyes and looked out into the room, which was lit brightly enough by the fire to make all the objects it contained quite distinct. An armchair was drawn up close to the fire; half an hour before I had been seated in it warming my toes before getting into bed; now it was again filled.