Persian and the Indian seas, and the more remote East, is probable, for this reason, that the same ruler suggested the only circumnavigation of Africa executed in antiquity. Beyond doubt thus thought king Darius I., the lord of Persia as well as of Egypt; he completed the canal, but, as his memorial-stones found on the spot mention, he caused it to be filled up again, probably because his engineers feared that the water of the sea, admitted into the canal, would overflow the fields of Egypt. [Sidenote: The Egyptian eastern ports.] The rivalry of the Lagids and the Seleucids, which dominated the policy of the post-Alexandrine period generally, was at the same time a contest between the Euphrates and the Nile. The former was in possession, the latter the pretender; and in the better time of the Lagids the peaceful offensive was pursued with great energy. Not only was that canal undertaken by Necho and Darius, now named the “river of Ptolemaeus,” opened for the first time to navigation by the second Ptolemy Philadelphus († 247 B.C.); but comprehensive harbour-structures were carried out at the points of the difficult east coast that were best fitted for the security of the ships and for the connection with the Nile. Above all, this was done at the mouth of the canal leading to the Nile, at the townships of Arsinoe, Cleopatris, Clysma, all three in the region of the present Suez. Further downward, besides several minor structures, arose the two important emporia, Myos Hormos, somewhat above the present Kosêr, and Berenice, in the land of the Trogodytes, nearly in the same latitude with Syene on the Nile as well as with the Arabian port Leuce Come, the former distant six or seven, the latter eleven days’ march from the town Coptos, near which the Nile bends farthest to the eastward, and connected with this chief emporium on the Nile by roads constructed across the desert and provided with large cisterns. The goods traffic of the time of the Ptolemies probably went less through the canal than by these land routes to Coptos. [Sidenote: Abyssinia.] Beyond that Berenice, in the land of the Trogodytes, the Egypt proper of the Lagids did not extend. The settlements lying farther to the south, Ptolemais “for the chase” below Suâkim, and the southmost township of the Lagid kingdom, the subsequent Adulis, at that time perhaps named “Berenice the Golden” or “near Saba,” Zula not far from the present Massowah, by far the best harbour on all this coast, were not more than coast-forts and had no communication by land with Egypt. These remote settlements were beyond doubt either lost or voluntarily abandoned under the later Lagids, and at the epoch when the Roman rule began, the Trogodytic Berenice was on the coast, like Syene in the interior, the limit of the empire. [Sidenote: The kingdom of the Axomites.]