"The Coliseum is so large that it covers six acres of ground."
"Six acres?" repeated Rollo.
"Yes," said Mr. George. "It is six hundred and twenty feet long. That is monstrous for such a building; but then the steamship Great Eastern is about a hundred feet longer."
"Then the Great Eastern is bigger than the Coliseum."
"She is longer," said Mr. George, "but she is not so wide nor so high."
"And which, all things considered, is the greatest work, do you think?" asked Rollo.
"The Coliseum may have cost the most labor," said Mr. George, "but the Great Eastern is far above it, in my opinion, in every element of real greatness. The Coliseum is a most wonderful structure, no doubt; but the building of an iron ship like the Great Eastern, to be propelled by steam against all the storms and tempests of the ocean, to the remotest corners of the earth, with ten thousand tons of merchandise on board, or ten thousand men, is, in my opinion, much the greatest exploit."
"At any rate," said Rollo, "the Coliseum makes the finest ruin."
"I am not certain of that, even," said Mr. George. "Suppose that the Great Eastern were to be drawn up upon the shore somewhere near London, and be abandoned there; and that then the whole world should relapse into barbarism, and remain so for a thousand years, and afterwards there should come a revival of science and civilization, and people should come here to see the ruins of the Coliseum, and go to London to see those of the great ship, I think they would consider the ship the greater wonder of the two."
"I think they would," said Rollo, "if they understood it all as well."
"They could not be easily made to believe, I suppose," said Mr. George, "that such an immense structure, all of iron, could have been made, and launched, and then navigated all over the world just by the power of the maze of iron beams and wheels, and machinery, which they would see in ruins in the hold."
"Uncle George," said Rollo, "what curious bricks the Romans used!"
So saying, Rollo pointed to the bricks in a mass of masonry near where they were standing. These bricks, like all those that were used in the construction of the building, were very flat. They were a great deal longer and a great deal wider than our bricks, and were yet not much more than half as thick. This gave them a very thin and flat appearance. Instead of being red, too, they were of a yellow color.
These bricks had not originally been used for outside works, but only for filling in the solid parts of the walls, and for forming the arches. But the stones with which the brick masonry had been covered and concealed having been removed, the bricks were of course in many places brought to view.
After looking about for some time, Rollo found a brick with two letters stamped upon it. It was evident that the letters had been stamped upon the clay in the making of the brick, while it was yet soft. The letters were P. D.
"Look, uncle George!" said Rollo; "look at those letters! What do you suppose they mean?"
"That is very curious," said Mr. George; and so saying he proceeded to examine the letters very closely.
"They were evidently stamped upon the brick," he said, "when it was soft. Perhaps they are the initials of the maker's name."
"I mean to look and see if all the bricks are stamped so," said Rollo.
So Rollo began to examine the other bricks wherever he could find any which had a side exposed to view; but though he found some which contained the letters, there were many others where no letters were to be seen.
"Perhaps the letters are on the under side," said Rollo. "I mean to get a stone and knock up some of the bricks, if I can, and see."
"No," said Mr. George; "that won't do."
"Yes, uncle George," said Rollo; "I want to see very much. And besides, I want to get a piece of a brick with the letters on it, to carry home as a specimen."
"A specimen of what?" asked Mr. George.
"A specimen of the Coliseum," said Rollo.
"No," said Mr. George; "I don't think that will do. They don't want to have the Coliseum knocked to pieces, and carried off any more."
"Who don't?" asked Rollo.
"The government," said Mr. George; "the pope."
"But it's very hard," said Rollo, "if the popes, after plundering the Coliseum themselves for hundreds of years, and carrying off all the beautiful marbles, and columns, and statues, to build their palaces with, can't let an American boy like me take away a little bit of a brick to put into my museum for a specimen."
Mr. George laughed and walked on. Rollo, who never persisted in desiring to do any thing which his uncle disapproved of, quietly followed him.
"Uncle George," said Rollo, "how do you suppose we can get up into the upper part, among the tiers of seats?"
"I think there must be a staircase somewhere," said Mr. George. "We will ramble about, and see if we do not find one."
So they walked on. They went sometimes along the margin of the arena, and then at other times they turned in under immense openings in masonry, and walked along the vaulted corridors, which were built in the thickness of the walls. There were several of these corridors side by side, each going entirely round the arena. They were surmounted by stupendous arches, which were built to sustain the upper portions of the building, which contained the seats for the spectators, and the passages on the upper floors leading to them.
[Illustration: VIEW OF THE LOWER CORRIDOR.]
After rambling on through and among the corridors for some time, Mr. George and Rollo, on emerging again into the arena, came to a wooden gate at the foot of a broad flight of stone steps, which seemed to lead up into the higher stories of the ruin.
"Ah!" exclaimed Rollo, as soon as he saw this gateway and the flight of steps beyond it, "this is the gate that leads up to the upper tiers."
"Yes," replied Mr. George, "only it is shut and locked."
Rollo went to the gate and took hold of it, but found, as Mr. George had said, that it was locked.
"But here comes the custodian," said Mr. George.
Rollo looked, and saw a man coming along the side of the arena with a key in his hand. When the man came near, he looked at Mr. George and Rollo, and also at the door, and then asked a question in Italian.
"Si, signore," said Mr. George.
So the man advanced and unlocked the door. As soon as he had unlocked it, and Mr. George and Rollo had passed through, he looked towards them again, and asked another question.
"No, signore," said Mr. George.
Mr. George and Rollo then began to go up the stairs, while the man, having locked the door after them, went away.
CHAPTER VII. THE GLADIATOR.
"How did you know what it was that that man asked you?" asked Rollo.
"I knew from the circumstances of the case," replied Mr. George. "The first question I knew must be whether we wished to go up; and the second, whether we wished him to go with us."
"What do you suppose they keep the gate locked for?" asked Rollo.
"So as to make us pay when we come down," said Mr. George.
"Do you suppose they mean to make us pay?" asked Rollo.
"They will not make us, exactly," said Mr. George; "but they will expect something, no doubt. There may be another reason, however, why they keep the gate locked; and that is, to prevent children and stragglers from going up, where they might fall and break their necks at some of the exposed and dangerous places."
"Do you suppose that there are dangerous places up here?" asked Rollo.
"Yes," said Mr. George; "I suppose there are a great many; and I advise you to be very careful where you go."
The flight of stairs where Mr. George and Rollo were ascending was very broad; and it was formed of the long, flat bricks, such as Rollo had observed below. The bricks were placed edgewise.
"I suppose that these steps were covered with slabs of marble, in old times," said Rollo.