To the right of the principal entrance a doorway opens into two square rooms with gratings, where the wild beasts were probably kept. Another very narrow corridor ran from the street to the arena, near which it ascended, by a small staircase, to a little round apartment apparently the _spoliatorium_, where they stripped the dead gladiators. The arena formed an oval of sixty-eight yards by thirty-six. It was surrounded by a wall of two yards in height, above which may still be seen the holes where gratings and thick iron bars were inserted as a precaution against the bounds of the panthers. In the large amphitheatres a ditch was dug around this rampart and filled with water to intimidate the elephants, as the ancients believed them to have a horror of that element. [Illustration: The Amphitheatre of Pompeii.] Paintings and inscriptions covered the walls or podium of the arena. These inscriptions acquaint us with the names of the duumvirs,--N. Istadicius, A. Audius, O. Caesetius Saxtus Capito, M. Gantrius Marcellus, who, instead of the plays and the illumination, which they would have had to pay for, on assuming office, had caused three cunei to be constructed on the order of the decurions. Another inscription gives us to understand that two other duumvirs, Caius Quinctius Valgus and Marcus Portius, holding five-year terms, had instituted the first games at their expense for the honor of the colony, and had granted the ground on which the amphitheatre stood, in perpetuity. These two magistrates must have been very generous men, and very fond of public shows. We know that they contributed, in like manner, to the construction of the Odeon. Would you now like to go over the general sweep of the tiers--the _visorium_? Three grand divisions as in the theatre; the lowermost separated, by entries and private flights of steps, into eighteen boxes; the middle and upper one divided into cunei, the first by twenty stairways, the second by forty. Around the latter was an inclosing wall, intersected by vomitories and forming a platform where a number of spectators, arriving too late for seats, could still find standing-room, and where the manœuvres were executed that were requisite to hoist the velarium, or awning. All these made up an aggregate of twenty-four ranges of seats, upon which were packed perhaps twenty thousand spectators. So much for the audience. Nothing could be more simple or more ingenious than the system of extrication by which the movement, to and fro, of this enormous throng was made possible, and easy. The circular and vaulted corridor which, under the tiers, ran around the arena and conducted, by a great number of distinct stairways, to the tiers of the lower and middle cavea, while upper stairways enabled the populace to ascend to the highest story assigned to it.