“Very interesting reading it might be made, too,” remarked Sherlock Holmes, sticking a small piece of plaster over the prick on his finger. “I have to be careful,” he continued, turning to me with a smile, “for I dabble with poisons a good deal.” He held out his hand as he spoke, and I noticed that it was all mottled over with similar pieces of plaster, and discoloured with strong acids.

“We came here on business,” said Stamford, sitting down on a high three-legged stool, and pushing another one in my direction with his foot. “My friend here wants to take diggings, and as you were complaining that you could get no one to go halves with you, I thought that I had better bring you together.”

Sherlock Holmes seemed delighted at the idea of sharing his rooms with me. “I have my eye on a suite in Baker Street,” he said, “which would suit us down to the ground. You don’t mind the smell of strong tobacco, I hope?”

“I always smoke ‘ship’s’ myself,” I answered.

“That’s good enough. I generally have chemicals about, and occasionally do experiments. Would that annoy you?”

“By no means.”

“Let me see—what are my other shortcomings. I get in the dumps at times, and don’t open my mouth for days on end. You must not think I am sulky when I do that. Just let me alone, and I’ll soon be right. What have you to confess now? It’s just as well for two fellows to know the worst of one another before they begin to live together.”

I laughed at this cross-examination. “I keep a bull pup,” I said, “and I object to rows because my nerves are shaken, and I get up at all sorts of ungodly hours, and I am extremely lazy. I have another set of vices when I’m well, but those are the principal ones at present.”

“Do you include violin-playing in your category of rows?” he asked, anxiously.

“It depends on the player,” I answered. “A well-played violin is a treat for the gods—a badly-played one——”

“Oh, that’s all right,” he cried, with a merry laugh. “I think we may consider the thing as settled—that is, if the rooms are agreeable to you.”

“When shall we see them?”

“Call for me here at noon to-morrow, and we’ll go together and settle everything,” he answered.

“All right—noon exactly,” said I, shaking his hand.

We left him working among his chemicals, and we walked together towards my hotel.

“By the way,” I asked suddenly, stopping and turning upon Stamford, “how the deuce did he know that I had come from Afghanistan?”

My companion smiled an enigmatical smile. “That’s just his little peculiarity,” he said. “A good many people have wanted to know how he finds things out.”