It is quite possible to build up in imagination the old Roman city, and to depict before our mind's eye the scenes that once took place where now the rustics toil and till the ground. We enter the forum, the great centre of the city, the common resort and lounging-place of the citizens, who met together to discuss the latest news from Rome, to transact their business, and exchange gossip. On the west side stood the noble basilica, or hall of justice--a splendid building, its entrance being adorned with fine Corinthian columns; and slabs of polished Purbeck marble, and even of green and white marble from the Pyrenees, covered the walls. It was a long rectangular hall, 233 feet in length by 58 feet in width, and at each side was a semicircular apse, which was called the Tribune. Here the magistrate sat to administer justice, or an orator stood to address the citizens. In the centre of the western wall was another apse, where the _curia_ met for the government of the city. Two rows of columns ran down the hall, dividing it into a nave with two aisles, like many of our churches. Indeed the form of the construction of our churches was taken from these Roman basilica. Several chambers stood on the west of the hall, one of which was another fine hall, probably used as a corn exchange. The height of this noble edifice, the roof of which was probably hidden by a coffered ceiling, must have been about fifty-seven feet. Passing along the main street towards the south gate we come to the foundations of a nearly circular temple. Two square-shaped buildings stood on the east of the city, which were probably temples for some Gaulish form of religion, as similar sacred buildings have been discovered in France. A quadrangle of buildings near the south gate, having various chambers, contained the public baths, whither the Romans daily resorted for gossip and discussion as well as for bathing. There is an ingenious arrangement for using the waste water for the purpose of flushing the drains and sewers. Nor were they ignorant of the invention of a force-pump, as the accompanying illustration on the next page shows. [Illustration: ROMAN FORCE-PUMP] The amphitheatre stands outside the gate, whither the citizens flocked to see gladiatorial displays or contests between wild beasts. With the exception of one at Dorchester, it is the largest in Britain. It is made of lofty banks of earth, which surround the arena, and must have been an imposing structure in the days of its glory, with its tiers of seats rising above the level arena. It is difficult to imagine this grass-covered slope occupied by a gay crowd of Romans and wondering Britons, all eagerly witnessing some fierce fight of man with man, or beast with beast, and enthusiastically revelling in the sanguinary sport. The modern rustics, who have no knowledge of what was the original purpose of "the Mount," as they name the amphitheatre, still call the arena "the lions' den."