“You can see for yourself, sir,” Sills led the magnate to where the argon-filled container of the few grams of pure ammonium were. “That is the metal. Over here to the right, I’ve got the oxide, an oxide which is more metallic than the metal itself, strangely enough. It is the oxide that is what the papers call ‘substitute gold.’ ”

Bankhead’s face showed not an atom of the sinking feeling within him as he viewed the oxide with dismay. “Take it out in the open,” he said, “and let’s see it.”

Sills shook his head. “I can’t, Mr. Bankhead. Those are the first samples of ammonium and ammonium oxide that ever existed. They’re museum pieces. I can easily make more for you, if you wish.”

“You’ll have to, if you expect me to sink my money in it. You satisfy me and I’ll be willing to buy your patent for as much as⁠—oh, say a thousand dollars.”

“A thousand dollars!” exclaimed Sills and Taylor together.