"That M. Borély does not know his manners," said Lupin. "M. Borély should have introduced us to each other. We are equals here, sir: it is no case of a superior and an inferior, of a prisoner and a visitor who condescends to come and see him. There are two men here; and one of those two men has a hat on his head, which he ought not to have."

"Now look here . . ."

"Take the lesson as you please, sir," said Lupin.

The stranger came closer to him and tried to speak.

"The hat first," said Lupin, "the hat. . . ."

"You shall listen to me!"

"No."

"Yes."

"No."

Matters were becoming virulent, stupidly. The second stranger, the one who had kept silent, placed his hand on his companion's shoulder and said, in German: