charta.  Plutarch assures us, that the library at Pergamos contained two hundred thousand volumes.  The whole collection was given by Marc Antony as a present to Cleopatra, and thus the two libraries were consolidated into one.  In about six or seven centuries afterwards, the volumes of science, by order of the calif Omar, served for a fire to warm the baths of Alexandria; and thus perished all the physic of the soul.  The town subsists at this day, and retains the name of Pergamos.  See Spon’s Travels, vol. i.

PERINTHUS, a town of Thrace, situate on the Propontis, now called Heraclea.

PERUSIA, formerly a principal city of Etruria, on the north side of the Tiber, with the famous Lacus Trasimenus to the east.  It was besieged by Augustus, and reduced by famine.  Lucan has, Perusina fames.  It is now called Perugia, in the territory of the Pope.

PHARSALIA, a town in Thessaly, rendered famous by the last battle between Pompey and Julius Caesar.

PHILADELPHIA:  there were several ancient towns of this name.  That which Tacitus mentions was in Lydia, built by Attalus Philadelphus; it is now called by the Turks, Alah Scheyr.

PHILIPPI, a city of Macedonia, on the confines of Thrace; built by Philip of Macedon, and famous for the battle fought on its plains between Augustus and the republican party.  It is now in ruins.

PHILIPPOPOLIS, a city of Thrace, near the river Hebrus.  It derived its name from Philip of Macedon, who enlarged it, and augmented the number of inhabitants.

PICENTIA, the capital of the Picentini, on the Tuscan Sea. not far from Naples.

PICENUM, a territory of Italy, to the east of Umbria, and in some parts extending from the Apennine to the Adriatic.  It is now supposed to be the March of Ancona.

PIRAEEUS, a celebrated port near Athens.  It is much frequented at this day; its name, Porto Lione.

PISAE, a town of Etruria, which gave name to the bay of Pisa, Sinus Pisanus.

PLACENTIA, a town in Italy, now called Placenza, in the duchy of Parma.

PLANASIA, a small island near the coast of Etruria, in the Tuscan Sea; now Pianosa.

POMPEII, a town of Campania, near Herculaneum.  It was destroyed by an earthquake in the reign of Nero.

POMPEIOPOLIS:  there were anciently two cities of the name; one in Cilicia, another in Paphlagonia.

PONTIA, an island in the Tuscan sea; a place of relegation or banishment.

PONTUS, an extensive country of Asia Minor, lying between Bithynia and Paphlagonia, and extending along the Pontus Euxinus, the Euxine or the Pontic Sea, from which it took its name.  It had that sea to the east, the mouth of the Ister to the north, and Mount Haemus to the south.  The wars between Mithridates, king of Pontus, and the Romans, are well known.