And M. Nicole once more took the thing from his pocket and rapped the table with it, producing the sound of a hard body with each rap.

Prasville whispered, in astonishment:

“A glass eye!”

“Why, of course!” cried M. Nicole, laughing gaily. “A glass eye! A common or garden decanter-stopper, which the rascal stuck into his eyesocket in the place of an eye which he had lost—a decanter-stopper, or, if you prefer, a crystal stopper, but the real one, this time, which he faked, which he hid behind the double bulwark of his spectacles and eye-glasses, which contained and still contains the talisman that enabled Daubrecq to work as he pleased in safety.”

Prasville lowered his head and put his hand to his forehead to hide his flushed face: he was almost possessing the list of the Twenty-seven. It lay before him, on the table.

Mastering his emotion, he said, in a casual tone:

“So it is there still?”

“At least, I suppose so,” declared M. Nicole.

“What! You suppose so?”

“I have not opened the hiding-place. I thought, monsieur le secrétaire;-général, I would reserve that honour for you.”