He opened his safe and, from a special cash-box, produced a tiny piece of paper which he put against the top left corner:

"That's right. The torn edges fit exactly. The proof is undeniable. All that remains is to verify the make of this foreign-post-paper."

Clarisse was radiant with delight. No one would have believed that the most terrible torture had racked her for weeks and weeks and that she was still bleeding and quivering from its effects.

While Prasville was holding the paper against a window-pane, she said to Lupin:

"I insist upon having Gilbert informed this evening. He must be so awfully unhappy!"

"Yes," said Lupin. "Besides, you can go to his lawyer and tell him."

She continued:

"And then I must see Gilbert to-morrow. Prasville can think what he likes."

"Of course. But he must first gain his cause at the Elysee."

"There can't be any difficulty, can there?"

"No. You saw that he gave way at once."

Prasville continued his examination with the aid of a magnifying-glass and compared the sheet with the scrap of torn paper. Next, he took from the cash-box some other sheets of letter-paper and examined one of these by holding it up to the light:

"That's done," he said. "My mind is made up. Forgive me, dear friend: it was a very difficult piece of work.... I passed through various stages. When all is said, I had my suspicions... and not without cause... "

"What do you mean?" asked Clarisse.

"One second.... I must give an order first."

He called his secretary:

"Please telephone at once to the Elysee, make my apologies and say that I shall not require the audience, for reasons which I will explain later."

He closed the door and returned to his desk. Clarisse and Lupin stood choking, looking at him in stupefaction, failing to understand this sudden change. Was he mad? Was it a trick on his part? A breach of faith? And was he refusing to keep his promise, now that he possessed the list?

He held it out to Clarisse:

"You can have it back."

Have it back?"

"And return it to Daubrecq."

"To Daubrecq?"

"Unless you prefer to burn it."

"What do you say?"

"I say that, if I were in your place, I would burn it."

"Why do you say that? It's ridiculous!"

"On the contrary, it is very sensible."

"But why? Why?"

"Why? I will tell you. The list of the Twenty-seven, as we know for absolutely certain, was written on a sheet of letter-paper belonging to the chairman of the Canal Company, of which there are a few samples in this cash-box. Now all these samples have as a water-mark a little cross of Lorraine which is almost invisible, but which can just be seen in the thickness of the paper when you hold it up to the light. The sheet which you have brought me does not contain that little cross of Lorraine."*

Lupin felt a nervous trembling shake him from head to foot and he dared not turn his eyes on Clarisse, realizing what a terrible blow this was to her. He heard her stammer: