“They are conductors, Captain, to carry off the overflow of the sea after a norther. They lead under the city, opening at various places. I have had the pleasure of passing through them.”

“Ha! How?”

“On a little smuggling expedition.”

“It is possible, then, to reach the town by these?”

“Nothing easier, unless they may have a guard at the mouth; but that is not likely. They would not dream of anyone’s making the attempt.”

“How would you like to make it?”

“If the Captain wishes it, I will bring him a bottle of eau-de-vie from the Café de Santa Anna.”

“I do not wish you to go alone. I would accompany you.”

“Think of it, Captain; there is risk for you in such an undertaking. I may go safely. No one knows that I have joined you, I believe. If you are taken—.”

“Yes, yes; I know well the result.”