by the
resemblance between them.

These columns were built in honor of the victories of great generals,
and the spiral lines of sculptures were representations of their
different exploits. The statue upon the top of the column was,
originally, that of the man in whose honor the column was erected. But
in the case of the Roman columns, these original statues have been taken
down, and replaced by bronze images of saints, or of the Virgin Mary.

Near the column of Trajan was a large sunken space, in the middle of
the square, with a railing around it. In the bottom of this sunken space
was a pavement, which looked very old, and rising from it were rows of
columns with the tops broken off. The old pavement was eight or ten feet
below the level of the street.

"This must be some old ruin or other," said Rollo; "a temple perhaps."

"Only I do not see," said Charles, "why they built their temples down so
low."

"Nor do I," said Rollo.

"But, Rollo," said Charles, "I think it is time for us to begin to try
to find our way home. I don't see how you are going to find the way at
all."

"If I only knew the name of the hotel, or even the name of the street,"
said Rollo, "I should know at once what to do."

CHAPTER V.

GETTING LOST.

"And now," said Rollo, "the first thing is to find somebody that can
speak French or English, for us to inquire of."

"What good will that do?" asked Charles, "as long as we don't know what
to ask them for?"

"True," said Rollo. "That's a real difficulty. I wish we just knew the
name of the hotel. At any rate, we will walk along until we find a
carriage, and I will be thinking what we had better do."

The boys walked along together. Charles kept silence, so as not to
interrupt Rollo in his thinking.

"All I know," said Rollo, after a short pause, "is, that the long,
straight street that we came through, is the Corso. I have heard of that
street before. If we could only find our way to the Corso, I believe
that I could follow it along, and at last find the mosaic shop, and so
get back to our hotel."

"Very well," said Charles, "let us try."

"Or, we might get into a carriage," said Rollo, "and direct the coachman
which way to drive by pointing."

"So we could," said Charles. "And I should like that, for I am tired of
walking so much."

"Then we will get a carriage," said Rollo. "We will take the first one
that we see. You shall get inside, and I will mount upon the box with