Before the church was an immense portico, supported by columns. The columns, and the whole entablature which they supported, were darkened by time, and cracked, and chipped, and broken in the most remarkable manner. Allie and Charles stood under the portico and looked around, while Rollo paid the coachman.

INTERIOR OF THE PANTHEON.

There was a large open square before the Pantheon, with an ancient and very remarkable looking fountain in the centre of it. There was a basin around this fountain, into which monstrous mouths, carved in marble, were spouting water. When Rollo had paid the coachman, he led the way into the church. Allie and Charles followed him. They found themselves ushered into an immense circular interior, with rows of columns all around the sides, and chapels, and sculptures, and paintings, and beautiful panels of variegated marbles between them.

Overhead was an immense dome. This dome is nearly a hundred and fifty feet high, and the circular opening in the centre of it is about thirty feet across. Through this opening the rain was descending in a steady but gentle shower. It was very curious to look up and see the innumerable drops falling slowly from the bright opening above, down to the marble floor. This opening is the only window. There is no other place, as you will see by the engraving, where light can come in.

The margin of the opening is formed of an immense brass ring. Such a ring is necessary in a structure like this, and it must be of great thickness and strength, to resist the pressure of the stones crowding in upon it all around.

This Pantheon was built by the ancient Romans, two thousand years ago. What it was built for originally nobody now knows. In modern times it has been changed into a church. It is immensely large, being nearly a hundred and fifty feet in diameter, and a hundred and fifty feet high. If you will inquire and ascertain what is the size of some large building in your vicinity, and compare it with these dimensions, you will form a clearer idea of the magnitude of this ancient edifice than you can acquire in any other way.

Rollo and his party rambled about the Pantheon, looking at the statues, and paintings, and chapels, and observing the groups of pilgrims and of visitors that were continually coming and going, for nearly an hour. By this time the shower had entirely passed away, and the sun having come out bright, they all walked home.