founded by Sejanus, the minister of Tiberius Cæsar, and destroyed by
Constantine. The walls consist of brickwork, and have corridors on the
inside, decorated with stucco and paintings. The camp was between the
Portæ Viminalis and Nomentana, and forms a square projection in the
present wall. It was outside the agger of Servius Tullius. The north
wall is of the time of Tiberius; the east was rebuilt in the fourth
century; the south has been reconstructed out of old square stones,
probably material taken from the west or city wall (which has never
been found), or from fragments of the Agger of Servius Tullius. To
write the history of the Prætorian Camp would be equivalent to writing
the history of Rome from Tiberius to Constantine. Here murderers were
made emperors, and the empire put up to auction. Hence the Prætorians
sallied out to attack the citizens, who in their turn assailed the
camp. Here the guilty found asylum, and the innocent death.
_Near the camp stood_