The chief cleruchies of Pericles are: Thracian Chersonese (453-452), Lemnos and Imbros, Andros, Naxos and Eretria (before 447); ' Brea in Thrace (446); Oreus (445); Amisus and Astacus in the Black Sea (after 440); Aegina (431).
Part of the kingdom was now annexed to the Roman Empire, being united with Bithynia in a double province called "Pontus and Bithynia": this part included (possibly from the first, but certainly from about 40 B.C. onwards) only the seaboard between Heracleia (Eregli) and Amisus (Samsun), the ora Pontica.
The table-land consists of a series of fertile plains, of varying size and elevation separated from each other by upland tracts or mountains, and it is drained almost entirely by the river Iris (Yeshil Irmak) and its numerous tributaries, the largest of which are the Scylax (Tchekerek Irmak) with many affluents and the Lycus (Kalkid Irmak), all three rising in the highlands near, or on, the frontier of Armenia Minor and flowing first in a westerly and then in a north-westerly direction to merge their waters in a joint stream, which (under the name of the Iris) pierces the mountain-wall and emerges on the east of Amisus (Samsun).
The sea-coast, like the rest of the south shore of the Euxine, was studded with Greek colonies founded from the 6th century onwards: Amisus, a colony of Miletus, which in the 5th century received a body of Athenian settlers, now the port of Samsun; Cotyora, now Ordu; Cerasus, the later Pharnacia, now Kerasund; and Trapezus (Trebizond), a famous city from Xenophon's time till the end of the middle ages.
Part of it was handed over by Pompey to client princes: the coast-land east of the Halys (except the territory of Amisus) and the hill-tribes of Paryadres were given, with Lesser Armenia, to the Galatian chief Deiotarus, with the title of king; Comana was left under the rule of its high-priest.
The rest of the interior was partitioned by Pompey amongst the inland cities, almost all of which were founded by him, and, according to one view, was included together with the seaboard west of Amisus and the corner of northeast Paphlagonia possessed by Mithradates in his new province Pontus-Bithynia.
Amasia and Amisus were also given to native princes.
After the battle of Actium (31 B.C.) Augustus restored Amisus as a "free city" to the province of Bithynia-Pontus, but made no other serious change.
295), the Pontic districts were divided up between four provinces of the dioecesis pontica: (1) Paphlagonia, to which was attached most of the old province Pontus; (2) Diospontus, re-named Helenopontus by Constantine, containing the rest of the province Pontus and the adjoining district, eight cities in all (including Sinope, Amisus and Zela) with Amasia as capital; (3) Pontus Polemoniacus, containing Comana, Polemonium, Cerasus and Trapezus with Neocaesarea as capital; and (4) Armenia Minor, five cities, with Sebasteia, as capital.
SAMSUN (anc. Amisus), the chief town of the Janik sanjak of the Trebizond vilayet of Asiatic Turkey, situated on the S.
Amisus, which stood on a promontory about I a m.
A solution by means of the parabola and hyperbola was given by Dionysodorus of Amisus (c. 1st century B.c), and a similar problem - to construct a segment equal in volume to a given segment, and in surface to another segment - was solved by the Arabian mathematician and astronomer, Al Kuhi.
It must be far enough west to explain why trade tended to the distant Sinope, 4 hardly accessible behind lofty and rugged mountains, and not to Amisus by the short and easy route which was used in the Graeco-Roman period.
Amastris, a few miles east of the Parthenius, became important under the Macedonian monarchs; while Amisus, a colony of Sinope, situated a short distance east of the Halys, and therefore not strictly in Paphlagonia as defined by Strabo, rose to be almost a rival of its parent city.
The best routes from the plateau to the Black Sea were followed by the Roman roads from Tavium and Sebasteia to Sinope and Amisus, and those from Sebasteia to Cotyora and Cerasus-Pharnacia, which at first ascend the upper Halys.
Thus Pontus, with the exception of some of the maritime cities, such as Sinope, Heraclea and Amisus, became Roman territory.