a slight stoop, wearing a reddish-brown beard cut into a point, a
tortoise-shell eyeglass with a black silk ribbon, and an ebony
walking-stick with a handle shaped like a swan's head.

"That's something for the police to go upon," said Mazeroux.

They were leaving the café when Don Luis stopped his companion.

"One moment."

"What's the matter?"

"We've been followed."

"Followed? What next? And by whom, pray?"

"No one that matters. I know who it is and I may as well settle his
business and have done with it. Wait for me. I shall be back; and I'll
show you some fun. You shall see one of the 'nuts,' I promise you."

He returned in a minute with a tall, thin man with his face set in
whiskers. He introduced him:

"M. Mazeroux, a friend of mine, Señor Caceres, an attaché at the Peruvian
Legation. Señor Caceres took part in the interview at the Prefect's just
now. It was he who, on the Peruvian Minister's instructions, collected
the documents bearing upon my identity." And he added gayly: "So you were
looking for me, dear Señor Caceres. Indeed, I expected, when we left the
police office--"