We all learn by experience, and your lesson this time is that you should never lose sight of the alternative. Sherlock Holmes speaking with Dr. Watson.

Clouds of insects danced and buzzed in the golden autumn light, and the air was full of the piping of the song-birds. Long, glinting dragonflies shot across the path, or hung tremulous with gauzy wings and gleaming bodies.

And yet the motives of women are so inscrutable. You remember the woman at Margate whom I suspected for the same reason. No powder on her nose - that proved to be the correct solution. How can you build on such a quicksand? Their most trivial action may mean volumes, or their most extraordinary conduct may depend upon a hairpin or a curling tongs.

Just as an octopus may have his den in some ocean cave, and come floating out a silent image of horror to attack a swimmer, so I picture such a spirit lurking in the dark of the house which he curses by his presence, and ready to float out upon all whom he can injure.

It may have been a comedy, or it may have been a tragedy. It cost one man his reason, it cost me a blood-letting, and it cost yet another man the penalties of the law. Yet there was certainly an element of comedy. Well, you shall judge for yourselves.

"Dr. Munro, sir," said he, "I am a walking museum. You could fit what ISN'T the matter with me on to the back of a -- visiting card. If there's any complaint you want to make a special study of, just you come to me, sir, and see what I can do for you. It's not every one that can say that he has had cholera three times, and cured himself by living on red pepper and brandy."

"I should have more faith," he said; "I ought to know by this time that when a fact appears opposed to a long train of deductions it invariably proves to be capable of bearing some other interpretation."