is accurately determined by the fact that the Via Appia, which runs from north-west to south-east from Casilinum to Calatia, turns due east very soon after passing the so-called Arch of Hadrian (a triumphal arch of brickwork, once faced with marble, with three openings, erected in honour of some emperor unknown), and continues to run in this direction for (6,000 ancient Oscan feet). The west gate was the Porta Romana; remains of the east gate (the name of which we do not know) have been found. This fact shows that the main street of the town was perfectly oriented, and that before the Via Appia was constructed, i.e. in all probability in pre-Roman times. The width of the town from north to south cannot be so accurately determined as the line of the north and south walls is not known, though it can be approximately fixed by the absence of tombs. Beloch fixes it at 4,000 Oscan feet = , nor is it absolutely certain (though it is in the highest degree probable, for Cicero praises its regular arrangement and fine streets) that the plan of the town was rectangular. Within the town are remains of public baths on the north of the Via Appia and of a theatre opposite, on the south. The former consisted of a large cryptoporticus round three sides of a court, the south side being open to the road; it now lies under the prisons. Beloch (see below) attributes this to the Oscan period; but the construction as shown in Labruzzi's drawing (v. 17) 1 is partly of brick-work and opus reticulatum, which may, of course, belong to a restoration. The stage of the theatre had its back to the road; Labruzzi (v. 18) gives an interesting view of the cavea. It appears from inscriptions that it was erected after the time of Augustus. Other inscriptions, however, prove the existence of a theatre as early as 94 BC. The Roman colony was divided into regions and possessed a capitolium, with a temple of Jupiter, within the town, and the marketplace, for unguents especially, was called Seplasia; we also hear of an aedes alba, probably the original senate house, which stood in an open space known as albana. But the sites of all these are uncertain. A Mithraeum may also be seen, by appointment. Amphitheatre Outside the town, in Santa Maria Capua Vetere, there is the