In the Roman theatre the construction of the orchestra and stage was different from that of the Greeks. By the construction peculiar to the Roman theatre, the stage was brought nearer to the audience (the arc not exceeding a semi-circle), and made considerably deeper than in the Greek theatre. The length of the stage was twice the diameter of the orchestra. The Roman orchestra contained no thymele. The back of the stage, or proscenium, was adorned with niches, and columns, and friezes of great richness, as may be seen in some of the theatres of Asia Minor, and in the larger theatre at Pompeii, which belong to the Roman period. On the whole, however, the construction of a Roman theatre resembled that of a Greek one. The Senate, and other distinguished persons, occupied circular ranges of seats within the orchestra; the prætor had a somewhat higher seat. The space between the orchestra and the first præcinctio, usually consisting of fourteen seats, was reserved for the equestrian order, tribunes, etc. Above them were the seats of the plebeians. Soldiers were separated from the citizens. Women were appointed by Augustus to sit in the portico, which encompassed the whole. Behind the scenes were the postscenium, or retiring-room, and porticoes, to which, in case of sudden showers, the people retreated from the theatre. The earliest theatres at Rome were temporary buildings of wood. A magnificent wooden theatre, built by M. Æmilius Scaurus, in his edileship, B.C. 58, is described by Pliny. In 55 B.C., Cn. Pompey built the first stone theatre at Rome, near the Campus Martius. A temple of Venus Victrix, to whom he dedicated the whole building, was erected at the highest part of the cavea. The next permanent theatre was built by Augustus, and named after his favorite, the young Marcellus, son of his sister Octavia. Vitruvius is generally reported to have been the architect of this building, which would contain 30,000 persons. The audience part was a semi-circle 410 feet in diameter. Twelve arches of its external wall still remain. From marks still visible in the large theatre at Pompeii, the place reserved for each spectator was about 13 inches. This theatre contained 5,000. The theatre of Pompeii, at Rome, contained 40,000. The theatre of Scaurus is said to have contained 80,000. The Romans surpassed the Greeks in the grandeur and magnificence of these buildings. They built them in almost all their towns. Remains of them are found in almost every country where the Romans carried their rule. One of the most striking Roman provincial theatres is that of Orange, in the south of France.