At length, upon a suggestion of my uncle's, I decided to try the spot nocturnally; and one stormy midnight ran the beams of an electric torch over the moldy floor with its uncanny shapes and distorted, half-phosphorescent fungi. The place had dispirited me curiously that evening, and I was almost prepared when I saw--or thought I saw--amidst the whitish deposits a particularly sharp definition of the "huddled form" I had suspected from boyhood. Its clearness was astonishing and unprecedented--and as I watched I seemed to see again the thin, yellowish, shimmering exhalation which had startled me on that rainy afternoon so many years before. Above the anthropomorphic patch of mold by the fireplace it rose; a subtle, sickish, almost luminous vapor which as it hung trembling in the dampness seemed to develop vague and shocking suggestions of form, gradually trailing off into nebulous decay and passing up into the blackness of the great chimney with a fetor in its wake. It was truly horrible, and the more so to me because of what I knew of the spot. Refusing to flee, I watched it fade--and as I watched I felt that it was in turn watching me greedily with eyes more imaginable than visible. When I told my uncle about it he was greatly aroused; and after a tense hour of reflection, arrived at a definite and drastic decision. Weighing in his mind the importance of the matter, and the significance of our relation to it, he insisted that we both test--and if possible destroy--the horror of the house by a joint night or nights of aggressive vigil in that musty and fungus-cursed cellar. 4 On Wednesday, June 25, 1919, after a proper notification of Carrington Harris which did not include surmises as to what we expected to find, my uncle and I conveyed to the shunned house two camp chairs and a folding camp cot, together with some scientific mechanism of greater weight and intricacy. These we placed in the cellar during the day, screening the windows with paper and planning to return in the evening for our first vigil. We had locked the door from the cellar to the ground floor; and having a key to the outside cellar door, were prepared to leave our expensive and delicate apparatus--which we had obtained secretly and at great cost--as many days as our vigils might be protracted. It was our design to sit up together till very late, and then watch singly till dawn in two-hour stretches, myself first and then my companion; the inactive member resting on the cot.