that she had come, he relapsed into his proper perspective as a patient; the room was a sick-room, and the shadows lost their fearsome quality. The only thing which it could not altogether abrogate was the strange Egyptian smell. You may put a mummy in a glass case and hermetically seal it so that no corroding air can get within; but all the same it will exhale its odour. One might think that four or five thousand years would exhaust the olfactory qualities of anything; but experience teaches us that these smells remain, and that their secrets are unknown to us. Today they are as much mysteries as they were when the embalmers put the body in the bath of natron...

All at once I sat up. I had become lost in an absorbing reverie. The Egyptian smell had seemed to get on my nerves—on my memory—on my very will.

At that moment I had a thought which was like an inspiration. If I was influenced in such a manner by the smell, might it not be that the sick man, who lived half his life or more in the atmosphere, had gradually and by slow but sure process taken into his system something which had permeated him to such degree that it had a new power derived from quantity—or strength—or...

I was becoming lost again in a reverie. This would not do. I must take such precaution that I could remain awake, or free from such entrancing thought. I had had but half a night's sleep last night; and this night I must remain awake. Without stating my intention, for I feared that I might add to the trouble and uneasiness of Miss Trelawny, I went downstairs and out of the house. I soon found a chemist's shop, and came away with a respirator. When I got back, it was ten o'clock; the Doctor was going for the night. The Nurse came with him to the door of the sick-room, taking her last instructions. Miss Trelawny sat still beside the bed. Sergeant Daw, who had entered as the Doctor went out, was some little distance off.

When Nurse Kennedy joined us, we arranged that she should sit up till two o'clock, when Miss Trelawny would relieve her. Thus, in accordance with Mr. Trelawny's instructions, there would always be a man and a woman in the room; and each one of us would overlap, so that at no time would a new set of watchers come on duty without some one to tell of what—if anything—had occurred. I lay down on a sofa in my own room, having arranged that one of the servants should call me a little before twelve. In a few moments I was asleep.

When I was waked, it took me several seconds to get back my thoughts so as to recognise my own identity and surroundings. The short sleep had, however, done me good, and I could look on things around me in a more practical light than I had been able to do earlier in the evening. I bathed my face, and thus refreshed went into the sick-room. I moved very softly. The Nurse was sitting by the bed, quiet and alert; the Detective sat in an arm-chair across the room in deep shadow. He did not move when I crossed, until I got close to him, when he said in a dull whisper:

"It is all right; I have not been asleep!" An unnecessary thing to say, I thought—it always is, unless it be untrue in spirit. When I told him that his watch was over; that he might go to bed till I should call him at six o'clock, he seemed relieved and went with alacrity. At the door he turned and, coming back to me, said in a whisper:

"I sleep lightly and I shall have my pistols with me. I won't feel so heavy-headed when I get out of this mummy smell."

He too, then, had shared my experience of drowsiness!

I asked the Nurse if she wanted anything. I noticed that she had a vinaigrette in her lap. Doubtless she, too, had felt some of the influence which had so affected me. She said that she had all she required, but that if she should want anything she would at once let me know. I wished to keep her from noticing my respirator, so I went to the chair in the shadow where her back was toward me. Here I quietly put it on, and made myself comfortable.

For what seemed a long time, I sat and thought and thought. It was a wild medley of thoughts, as might have been expected from the experiences of the previous day and night. Again I found myself thinking of the Egyptian smell; and I remember that I felt a delicious satisfaction that I did not experience it as I had done. The respirator was doing its work.

It must have been that the passing of this disturbing thought made for repose of mind, which is the corollary of bodily rest, for, though I really cannot remember being asleep or waking from it, I saw a vision—I dreamed a dream, I scarcely know which.

I was still in the room, seated in the chair. I had on my respirator and knew that I breathed freely. The Nurse sat in her chair with her back toward me. She sat quite still. The sick man lay as still as the dead. It was rather like the picture of a scene than the reality; all were still and silent; and the stillness and silence were continuous. Outside, in the distance I could hear the sounds of a city, the occasional roll of wheels, the shout of a reveller, the far-away echo of whistles and the rumbling of trains. The light was very, very low; the reflection of it under the green-shaded lamp was a dim relief to the darkness, rather than light. The green silk fringe of the lamp had merely the colour of an emerald seen in the moonlight. The room, for all its darkness, was full of shadows. It seemed in my whirling thoughts as though all the real things had become shadows—shadows which moved, for they passed the dim outline of the high windows. Shadows which had sentience. I even thought there was sound, a faint sound as of the mew of a cat—the rustle of drapery and a metallic clink as of metal faintly touching metal. I sat as one entranced. At last I felt, as in nightmare, that this was sleep, and that in the passing of its portals all my will had gone.

All at once my senses were full awake. A shriek rang in my ears. The room was filled suddenly with a blaze of light. There was the sound of pistol shots—one, two; and a haze of white smoke in the room. When my waking eyes regained their power, I could have shrieked with horror myself at what I saw before me.