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Sherlock Holmes laughed. "Here is the foresight," said he putting

his finger upon the little disc and loop of the hat-securer.

"They are never sold upon hats. If this man ordered one, it is a

sign of a certain amount of foresight, since he went out of his

way to take this precaution against the wind. But since we see

that he has broken the elastic and has not troubled to replace

it, it is obvious that he has less foresight now than formerly,

which is a distinct proof of a weakening nature. On the other

hand, he has endeavoured to conceal some of these stains upon the

felt by daubing them with ink, which is a sign that he has not

entirely lost his self-respect."

"Your reasoning is certainly plausible."