"Really, for a city gentleman," he said, "you are not very sharp."

"What do you mean by that?"

"Don't you see that the duchess offers an asylum to the man to whom the letter is addressed, in case he is in any danger?"

"Yes, what next?"

"Next? Why, if we put him in danger he is certain to take it."

"And then?"

"Then we can search the house he goes to, and catch them all together."

Monsieur Hyacinthe reflected.

"Yes, the scheme is a good one," he said, turning the letter over and over in his hand and holding it near the candle to make sure it contained no other writing.

"I should think it was a good one!" exclaimed Courtin.