His incredible untidiness, his addiction to music at strange hours, his occasional revolver practice within doors, his weird and often malodorous scientific experiments, and the atmosphere of violence and danger which hung around him made him the very worst tenant in London.

"I can see nothing," said I, handing it back to my friend. "On the contrary, Watson, you can see everything. You fail, however, to reason from what you see. You are too timid in drawing your inferences."

Heaven, too, was very near to them in those days. God's direct agency was to be seen in the thunder and the rainbow, the whirlwind and the lightning. To the believer, clouds of angels and confessors, and martyrs, armies of the sainted and the saved, were ever stooping over their struggling brethren upon earth, raising, encouraging, and supporting them.

Let me run over the principal steps. We approached the case, you remember, with an absolutely blank mind, which is always an advantage. We had formed no theories. We were simply there to observe and to draw inferences from our observations.

I cannot live without brainwork. What else is there to live for? Stand at the window here. Was ever such a dreary, dismal, unprofitable world? See how the yellow fog swirls down the street and drifts across the duncoloured houses. What could be more hopelessly prosaic and material?

If you had killed Watson, you would not have got out of this room alive.

Excellent!" I cried. "Elementary," said he.