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 32 carefully a little pile of grey dust from the floor, and packed it away in an envelope. Finally he examined with his glass the word upon the wall, going over every letter of it with the most minute exactness. This done, he appeared to be satisfied, for he replaced his tape and his glass in his pocket.

"They say that genius is an infinite capacity for taking pains," he remarked with a smile. "It's a very bad definition, but it does apply to detective work."

Gregson and Lestrade had watched the manœuvres of their amateur companion with considerable curiosity and some contempt. They evidently failed to appreciate the fact, which I had begun to realize, that Sherlock Holmes' smallest actions were all directed towards some definite and practical end.

"What do you think of it, sir?" they both asked.

"It would be robbing you of the credit of the case if I was to presume to help you," remarked my friend. " You are doing so well now that it would be a pity for any one to interfere." There was a world of sarcasm in his voice as he spoke. "If you will let me know how your investigations go," he continued, "I shall be happy to give you any help I can. In the meantime I should like to speak to the constable who found the body. Can you give me his name and address?"

Lestrade glanced at his notebook; "John Rance," he said. "He is off duty now. You will find him at 46, Audley Court, Kennington Park Gate."

Holmes took a note of the address.

"Come along, Doctor," he said "we shall go and look him up. I'll tell you one thing which may help you in the case," he continued turning to the two detectives. "There has been murder done, and the murderer was a man. He was more than six feet high, was in the prime of life, had small feet for his height, wore coarse, square-toed boots and smoked a Trichinopoly cigar. He came here with his victim in a four-wheeled cab, which was drawn by a horse with three old shoes and one new one on his off fore-leg. In all probability the murderer had a florid face, and the finger-nails of his right hand were remarkably long. These are only a few of the indications, but they may assist you."

Lestrade and Gregson glanced at each other with an incredulous smile.

"If this man was murdered, how was it done?" asked the former.

"Poison," said Sherlock Holmes curtly, and strode off. "One other thing, Lestrade," he added, turning round at the door: "'Rache,' is the German for 'revenge'; so don't lose your time looking for Miss Rachel."

With which Parthian shot he walked away, leaving the two rivals open-mouthed behind him.