Mr. Czenki bowed without speaking.

“I am assuming that this is the Mr. Czenki who was associated with Mr. Barnato and Mr. Zeidt?” the young man went on.

“That is correct, yes,” replied the expert.

“And I believe, too, that you once did some special work for Professor Henri Moissan in Paris?”

Mr. Czenki’s black eyes seemed to be searching the other’s face for an instant, and then he nodded affirmatively.

“I made some tests for him, yes,” he volunteered.

Mr. Wynne passed on along the other side of the long table, and stopped at the end.  Mr. Latham was at his right, Mr. Schultze at his left, and Mr. Czenki sat at the far end, facing him.  The small sole-leather grip was on the floor at Mr. Wynne’s feet.  For a moment he permitted himself to enjoy the varying expressions of interest on the faces around the table.

“Gentlemen,” he began, then, “you all, probably, have seen my letter to Mr. Latham, or at least you are aware of its contents, so you understand that the diamonds which were mailed to you are your property.  I am not a eleemosynary institution for the relief of diamond merchants,” and he smiled a little, “for the gifts are preliminary to a plain business proposition—­a method of concentrating your attention, and, in themselves, part payment, if I may say it, for any worry or inconvenience which followed upon their appearance.  There are only five of them in the world, they are precisely alike, and they are yours.  I beg of you to accept them with my compliments.”

Mr. Schultze tilted his chair back a little, the better to study the young man’s countenance.

“I am going to make some remarkable statements,” the young man continued, “but each of those statements is capable of demonstration here and now.  Don’t hesitate to interrupt if there is a question in your mind, because everything I shall say is vital to each of you as bearing on the utter destruction of the world’s traffic in diamonds.  It is coming, gentlemen, it is coming, just as inevitably as that night follows day, unless you stop it.  You can stop it by concerted action, in a manner which I shall explain later.”

He paused and glanced along the table.  Only the face of Mr. Czenki was impassive.

“Since the opening of the fields in South Africa,” Mr. Wynne resumed quietly, “something like five hundred million dollars’ worth of diamonds have been found there; and we’ll say arbitrarily that all the other diamond fields of the world, including Brazil and Australia, have produced another five hundred million dollars’ worth —­in other words, since about 1868 a billion dollars’ worth of diamonds has been placed upon the market.  Gentlemen, that represents millions and millions of carats—­forty, fifty, sixty million carats in the rough, say.  Please bear those figures in mind a moment.

“Now, suddenly, and as yet secretly, the diamond output of the world has been increased fiftyfold—­that is, gentlemen, within the year I can place another billion dollars’ worth of diamonds, at the prices that hold now, in the open market; and within still another year I can place still another billion in the market; and on and on indefinitely.  To put it differently, I have found the unlimited supply.”