"When I was sure that she was perfectly right in every way, I was still a little bothered; but much more inclined to think my suspicion correct and that she had gone quietly back to bed in her sleep, without knowing what she had been doing. This was the most reasonable thing to think, as you must see.
"And then it came to me, suddenly, that vague, queer, mildewy smell in the room; and it was in that instant I became aware I had smelt the same strange, uncertain smell the night before in the passage.
"I was definitely uneasy now, and began to search my mother's room; though with no aim or clear thought of anything, except to assure myself that there was nothing in the room. All the time, you know, I never expected really to find anything; only my uneasiness had to be assured.
"In the middle of my search my mother woke up, and of course I had to explain. I told her about her door opening, and the knocks on the banister, and that I had come up and found her asleep. I said nothing about the smell, which was not very distinct; but told her that the thing happening twice had made me a bit nervous, and possibly fanciful, and I thought I would take a look 'round, just to feel satisfied.
"I have thought since that the reason I made no mention of the smell, was not only that I did not want to frighten my mother, for I was scarcely that myself; but because I had only a vague half-knowledge that I associated the smell with fancies too indefinite and peculiar to bear talking about. You will understand that I am able now to analyze and put the thing into words; but then I did not even know my chief reason for saying nothing; let alone appreciate its possible significance.
"It was my mother, after all, who put part of my vague sensations into words:—
"'What a disagreeable smell!' she exclaimed, and was silent a moment, looking at me. Then:—'You feel there's something wrong?' still looking at me, very quietly but with a little, nervous note of questioning expectancy.
"'I don't know,' I said. 'I can't understand it, unless you've really been walking about in your sleep.'
"'The smell,' she said.
"'Yes,' I replied. 'That's what puzzles me too. I'll take a walk through the house; but I don't suppose it's anything.'