was a London fog. Poor young Mr. Smith, he was a smoker also, but not as bad as the professor. His health—well, I don’t know that it’s better nor worse for the smoking.”
“Ah!” said Holmes, “but it kills the appetite.”
“Well, I don’t know about that, sir.”
“I suppose the professor eats hardly anything?”
“Well, he is variable. I’ll say that for him.”
“I’ll wager he took no breakfast this morning, and won’t face his lunch after all the cigarettes I saw him consume.”
“Well, you’re out there, sir, as it happens, for he ate a remarkable big breakfast this morning. I don’t know when I’ve known him make a better one, and he’s ordered a good dish of cutlets for his lunch. I’m surprised myself, for since I came into that room yesterday and saw young Mr. Smith lying there on the floor, I couldn’t bear to look at food. Well, it takes all sorts to make a world, and the professor hasn’t let it take his appetite away.”