"Ever buy or sell diamonds with him?"

"Once only. It was the first time. That is how I learned of the half-office to let."

The letter was written, and Dorrington stuffed it carelessly into his pocket. "Mr. Hamer is the name, is it?" he said. "I fancy I have met him somewhere. He is short-sighted, isn't he?"

"Oh yes, he is short-sighted. With pince-nez."

"Not very well lately?"

"No—I think not. He takes medicine in the office. But you will be careful, eh? He must not know."

"Do you think so? Perhaps I may tell him, though."

"Tell him? Ciel—no! You must not tell people! No!"

"Shall I throw the whole case over, and keep your deposit fee?"

"No—no, not that. But it is foolish to tell to people!"