paratively small, while that traversed by the Volturnus is the main
plain of Campania. Both of these rivers rise in the central Apennines,
and only smaller streams, such as the Sarnus, Sebethus, Savo, belong
entirely to Campania.

The road system of Campania was extremely well developed and touched all
the important towns. The main lines are followed (though less
completely) by the modern railways. The most important road centre of
Campania was Capua, at the east edge of the plain. At Casilinum, 3 m. to
the north-west, was the only bridge over the Volturnus until the
construction of the Via Domitiana; and here met the Via Appia, passing
through Minturnae, Sinuessa and Pons Campanus (where it crossed the
Savo) and the Via Latina which ran through Teanum Sidicinum and Cales.
At Calatia, 6 m. south-east of Capua, the Via Appia began to turn east
and to approach the mountains on its way to Beneventum, while the Via
Popillia went straight on to Nola (whence a road ran to Abella and
Abellinum) and thence to Nuceria Alfaterna and the south, terminating
at Regium. From Capua itself a road ran north to Vicus Dianae, Caiatia
and Telesia, while to the south the so-called Via Campana (there is up
ancient warrant for the name) led to Puteoli, with a branch to Cumae,
Baiae and Misenum; there was also connexion between Cumae, Puteoli and
Neapolis (see below), and another road to Atella and Neapolis. Neapolis
could also be reached by a branch from the Via Popillia at Suessula,
which passed through Acerrae. From Suessula, too, there was a short cut
to the Via Appia before it actually entered the mountains. Dornitian
further improved the communications of this district with Rome, by the
construction of the Via Domitiana, which diverged from the Via Appia at
Sinuessa, and followed the low sandy coast; it crossed the river
Volturnus at Volturnum, near its mouth, by a bridge, which must have
been a considerable undertaking, and then ran, still along the shore,
past Liternum to Cumae and thence to Puteoli. Here it fell into the
existing roads to Neapolis, the older Via Antiniana over the hills, at
the back, and the newer, dating from the time of Agrippa, through the
tunnel of Pausilypon and along the coast. The mileage in both cases was
reckoned from Puteoli. Beyond Naples a road led along the coast through
Herculaneum to Pompeii, where there was a branch for Stabiae and
Surrentum, and thence to Nuceria, where it joined the Via Popillia. From