A man always finds it hard to realize that he may have finally lost a woman's love, however badly he may have treated her.

The sky was of the deepest blue, with a few white, fleecy clouds drifting lazily across it, and the air was filled with the low drone of insects or with a sudden sharper note as bee or bluefly shot past with its quivering, long-drawn hum, like an insect tuning-fork.

The more outré and grotesque an incident is the more carefully it deserves to be examined.

It was in the days when France's power was already broken upon the seas, and when more of her three-deckers lay rotting in the Medway than were to be found in Brest harbour. But her frigates and corvettes still scoured the ocean, closely followed ever by those of her rival. At the uttermost ends of the earth these dainty vessels, with sweet names of girls or of flowers, mangled and shattered each other for the honour of the four yards of bunting which flapped from the end of their gaffs.

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.

The most difficult crime to track is the one which is purposeless.

"I have seen those symptoms before," said Holmes, throwing his cigarette into the fire. "Oscillation upon the pavement always means an affaire de coeur."