state of the various medical instruments in the wicker basket which hung in the lamplight inside the brougham had given him the data for his swift deduction. The light in our window above showed that this late visit was indeed intended for us. With some curiosity as to what could have sent a brother medico to us at such an hour, I followed Holmes into our sanctum.
A pale, taper-faced man with sandy whiskers rose up from a chair by the fire as we entered. His age may not have been more than three or four and thirty, but his haggard expression and unhealthy hue told of a life which has sapped his strength and robbed him of his youth. His manner was nervous and shy, like that of a sensitive gentleman, and the thin white hand which he laid on the mantelpiece as he rose was that of an artist rather than of a surgeon. His dress was quiet and sombre—a black frock-coat, dark trousers, and a touch of color about his necktie.
"Good-evening, doctor," said Holmes, cheerily. "I am glad to see that you have only been waiting a very few minutes."
"You spoke to my coachman, then?"
"No, it was the candle on the side-table that told me. Pray resume your seat and let me know how I can serve you."
"My name is Doctor Percy Trevelyan," said our visitor, "and I live at 403 Brook Street."
"Are you not the author of a monograph upon obscure nervous lesions?" I asked.
His pale cheeks flushed with pleasure at hearing that his work was known to me.
"I so seldom hear of the work that I thought it was quite dead," said he. "My publishers gave me a most discouraging account of its sale. You are yourself, I presume, a medical man?"
"A retired army surgeon."
"My own hobby has always been nervous disease. I should wish to make it an absolute specialty, but, of course, a man must take what he can get at first. This, however, is beside the question, Mr. Sherlock Holmes, and I quite appreciate
