energy; and, as I knew well, he was never so truly formidable as when, for days on end, he had been lounging in his arm-chair amid his improvisations and his black-letter editions. Then it was that the lust of the chase would suddenly come upon him, and that his brilliant reasoning power would rise to the level of intuition, until those who were unacquainted with his methods would look askance at him as on a man whose knowledge was not that of other mortals. When I saw him that afternoon so enwrapped in the music at St. James's Hall I felt that an evil time might be coming upon those whom he had set himself to hunt down.
"You want to go home," no doubt, doctor," he remarked, as we emerged.
"Yes, it would be as well."
"And I have some business to do which will take some hours. This business at Coburg Square is serious."
"Why serious?"
"A considerable crime is in contemplation. I have every reason to believe that we shall be in time to stop it. But to-day being Saturday rather complicates matters. I shall want your help to-night."
"At what time?"
"Ten will be early enough."
"I shall be at Baker Street at ten."
"Very well. And, I say, doctor, there may be some little danger, so kindly put your army revolver in your pocket." He waved his hand, turned on his heel, and disappeared in an instant among the crowd.
I trust that I am not more dense than my neighbors, but I was always oppressed with a sense of my own stupidity in my dealings with Sherlock Holmes. Here I had heard what he had heard, I had seen what he had seen, and yet from his words it was evident that he saw clearly not only what had happened, but what was about to happen, while to me the whole business was still confused and grotesque. As I drove home to my house in Kensington I thought over it all, from
