"Only a young gentleman," said Rollo.

"O, very well," rejoined the man, "that will do just as well. He will certainly wish to buy mosaics, while he is in Rome, for some of the young ladies of his acquaintance."

"I think that is very doubtful," said Rollo; "but nevertheless I will give him the card."

So Rollo and Charles bade the mosaic man good by, and went away.

They had been so much interested in what they had seen in the mosaic shop, and their attention, now that they had left it, was so much occupied with looking at the display of mosaics and cameos which they saw in the little show cases along the street, that Rollo forgot entirely his resolve to take an observation, so as not to lose his way. The boys walked on together until they came to a long and straight, though not very wide street, which was so full of animation and bustle, and was bordered, moreover, on each side by so many gay looking shops, that Rollo said he was satisfied it must be one of the principal streets of the town.

It was, in fact, the principal street in the town. The street is called the Corso. It runs in a straight line from the Porto del Popolo, which I have already described, into the very heart of the city. It is near the inner end of this street that the great region of ancient ruins begins.

Rollo and Charles began to walk along the Corso, looking at the shops as they went on. They were obliged, however, to walk in the middle of the street, for the sidewalks, where there were any, were so narrow and irregular as to be of very little service. Indeed, almost all the pedestrians walked in the middle of the street. Now and then a carriage came along, it is true, but the people in that case opened to the right and left, and let it go by.

After going on for some distance, Charles began to look about him somewhat uneasily.

"Rollo," said he, "are you sure that we can find our way home again?"

"O! I forgot about the way home," said Rollo; "but never mind; I can find it easily enough. I can inquire. What is the name of the hotel?"