'Why so, Mrs. Hudson?'
'Well, he's that strange, sir. After you was gone he walked and he walked, up and down, and up and down, until I was weary of the sound of his footstep. Then I heard him talking to himself and muttering, and every time the bell rang out he came on the stair-head, with "What is that, Mrs. Hudson?" And now he has slammed off to his room, but I can hear him walking away the same as ever. I hope he's not going to be ill, sir. I ventured to say something to him about cooling medicine, but he turned on me, sir, with such a look that I don't know how ever I got out of the room.'
'I don't think that you have any cause to be uneasy, Mrs. Hudson,' I answered. 'I have seen him like this before. He has some small matter upon his mind which makes him restless.'
I tried to speak lightly to our worthy