“Beg pardon, sir, but Mr. Finsen thought you might have taken his hat by mistake last night?”

“His hat?” The name “Finsen” was unknown to him.

“He wears a green felt hat like yours, sir, and they were on adjoining pegs.”

Field-Martin took off his head-covering and discovered his mistake. Finsen’s name was inside in small gold letters. He explained matters with the porter, and left the necessary directions for the exchange to be effected. Upstairs he ran into Slopkins.

“That chap Finsen was asking for you,” he remarked; “it seems you exchanged hats last night by mistake, and the porter thought possibly——”

“Who is Finsen?”

“You remember, he was talking so wonderfully last night about psychometry——”

“Oh, is that Finsen?”

“Yes,” replied the other. “Interesting man, but a bit queer, you know. Gets melancholia and that sort of thing, I believe. It was only a week or two ago, don’t you remember, that he tried to drown himself?”

“Indeed,” said Field-Martin dryly, and went upstairs to look at the evening papers.