Old Jode looks, blinks, and then he begins to kinda glow with happiness, inside and out. This is the oldest swindle on earth. It goes back to before history. It is so cold and so worn-out that it is undoubtedly the only one that ain't been tried on Mr. Vachti—and for a bloodthirsty old guy now gloomily hangin' on around seventy, it is the one bait that he would like to believe in if he could.

"Remarkable!" wheezes Jode. "You have experimental evidence, of course?"

"I beggared myself procurin' the materials," says the Prof, apologetic. "Modern chemicals will not work. One must use the impure, the sometimes ridiculous chemicals of the ancients. It is possible that the very impurities are the essential ingredients. But at the cost of all my savings, I made ten cubic centimetres of yellow fluid. I tried a bit of it on an ancient rat from the biology department at Perkins. It worked—too well. Much too well! So I—ah—I was forced to experiment for the proper dosage. One cubic centimetre of the yellow fluid—the elixir—it developed, would restore a twenty-pound animal to early maturity. Seven to ten centimetres would be required for an adult human being. But I had to expend eight cubic centimetres to verify this fact in my experiments on small animals. I have only two centimetres left. But I do have a number of very elderly rats at my dwelling. I will let you choose any one of them; I will administer the elixir, and allow you to take the animal away and care for it. In three days it will be a young rat again."

"Such evidence would be unquestionable," beams Jode. "How much?"

"Eh?" says the Prof, startled.

"You need the Elixir yourself," says Jode, grunting amiable. "You are broke. If somebody will finance the makin' of an adequate supply for you, you will make enough for him, too. You see, I am saving you the trouble of makin' the pitch. And I say again, how much?"

The Prof's eyes gleam. He wets his lips. Jode says confidential. "I am a customer. I can fetch in another—a very rich man. If I finance the operation myself, will you split with me what I get outa him? Your split will be in five figures. Maybe more."

"I—ah—when I am a young man again," admits the Prof, "it would be a very good idea to have some capital with which to start life anew. Er—yes, I will agree to that."

Jode asks questions, fast, and peels off century-notes like he was dealing a hand for set-back. He is hooked; he is beaming. All during the rest of dinner he wheezes and snorts happy to himself.