He turned a haggard but very composed face upon me. Said he: "I forgot myself. Of course you would not understand."
He measured me for a moment. "No doubt it is very absurd. You will not believe me even when I tell you, so that it is fairly safe to tell you. And it will be a comfort to tell someone. I really have a big business in hand, a very big business. But there are troubles just now. The fact is . . . I make diamonds."
"I suppose," said I, "you are out of work just at present?"
"I am sick of being disbelieved," he said impatiently, and suddenly unbuttoning his wretched coat he pulled out a little canvas bag that was hanging by a cord round his neck. From this he produced a brown pebble. "I wonder if you know enough to know what that is?" He handed it to me.
Now, a year or so ago, I had occupied my leisure in taking a London science degree,
