"It would delight me beyond measure to be one of the party to-night, but it is impossible. My appointment cannot be set aside."

The restaurant was brilliantly lighted, and the street lights had begun to flash out as the carriage arrived.

"Now, for a night of real sight-seeing!" cried Dalny, rising eagerly. "My dear Americans, I promise you something such as you have never before experienced!"

"I am heartily sorry that you are prevented from going with us, Surigny," declared Dave, holding out his hand to the young Frenchman.

"I shall pray for better fortune next time," smiled the Count, rather sadly.

"We are all desolate that you cannot go with us, Surigny," declared Dalny, also holding out his hand. Dan, too, shook hands with Surigny. Then the international plotter led the two Americans to the carriage awaiting outside.

After the Count of Surigny had waved his hand to the party and had walked away, Dalny placed Dave and Dan on the rear seat of the barouche, while he himself sat facing them.

A few words in Italian from Dalny, and the horses started. For half an hour the driver took his fares past ordinary sights.

"But we are not much interested, driver," cried Dalny, turning at last to the man who held the lines. "We are bored with this dullness, when Naples holds so much that may be seen by night. Take us through the Strada di Mara."

So the driver headed his horses toward the eastern, or older, part of the city. The Strada di Mara leads through one of the most thickly populated sections of Naples, and a part of the street extends up a steep hillside.