The strange part of the whole incident was this incapacity of action; and the more I reasoned about it the more I was mystified by the utter failure of nerve force. Indeed, while the mind was actively at work on this problem, the physical torpor continued, a languor not unlike the incipient drowsiness of anæsthesia came gradually over me, and, though mentally protesting against the helpless condition of the body, and struggling to keep awake, I fell asleep, and did not stir till morning. With the bright, clear winter’s day returned the doubts and disappointments of the day before--doubts of the existence of the phenomenon, disappointment at the failure of any solution of the hallucination. A second day in the studio did little towards dispelling the mental gloom which possessed us both, and at night my friend confessed that he thought we must have stumbled into a malarial quarter. At this distance of time it is absolutely incomprehensible to me how I could have gone on as I did from day to day, or rather from night to night--for the same hallucination was repeated nightly--without speaking to my friend, or at least taking some energetic steps towards an investigation of the mystery. But I had the same experience every night for fully a week before I really began to plan serious means of discovering whether it was an hallucination, a nightmare, or a flesh-and-blood intruder. First, I had some curiosity each night to see whether there would be a repetition of the incident. Second, I was eager to note any physical or mental symptom which would serve as a clue to the mystery. Pride, or some other equally authoritative sentiment, continued to keep me from disclosing my secret to my friend, although I was on the point of doing so on several occasions. My first plan was to keep a candle burning all night, but I could invent no plausible excuse to my comrade for this action. Next I proposed to shut the bedroom door, and on speaking of it to my friend, he strongly objected on the ground of the lack of ventilation, and was not willing to risk having the window open on account of the malaria. After all, since this was an entirely personal matter, it seemed to me the only thing to do was to depend on my own strength of mind and moral courage to solve this mystery unaided. I put my loaded revolver on the table by the bedside, drew back the lace curtain before going to bed, and left the door only half open, so I could not see into the studio. The night I made these preparations I awoke as usual, saw the same figure, but, as before, could not move a hand. After it had passed the window, I tried hard to bring myself to take my revolver, and find out whether I had to deal with a man or a simulacrum. But even while I was arguing with myself, and trying to find out why I could not move, sleep came upon me before I had carried out my purposed action.