2. The Persian Gulf has the name also of the Sea of Persia. Eratosthenes speaks of it in this manner: “They say that the mouth is so narrow, that from Harmozi,[678] the promontory of Carmania, may be seen the promontory at Macæ, in Arabia. From the mouth, the coast on the right hand is circular, and at first inclines a little from Carmania towards the east, then to the north, and afterwards to the west as far as Teredon and the mouth of the Euphrates.[679] In an extent of about 10,000 stadia, it comprises the coast of the Carmanians, Persians, and Susians, and in part of the Babylonians. (Of these we ourselves have before spoken.) Hence directly as far as the mouth are 10,000 stadia more, according, it is said, to the computation of Androsthenes of Thasos, who not only had accompanied Nearchus, but had also alone sailed along the sea-coast of Arabia.[680] It is hence evident that this sea is little inferior in size to the Euxine. “He says that Androsthenes, who had navigated the gulf with a fleet, relates, that in sailing from Teredon with the continent on the right hand, an island Icaros[681] is met with, lying in front, which contained a temple sacred to Apollo, and an oracle of [Diana] Tauropolus. 3. “Having coasted the shore of Arabia to the distance of 2400 stadia, there lies, in a deep gulf, a city of the name of Gerrha,[682] belonging to Chaldæan exiles from Babylon, who inhabit the district in which salt is found, and who have houses constructed of salt: as scales of salt separated by the burning heat of the sun are continually falling off, the houses are sprinkled with water, and the walls are thus kept firm together. The city is distant 200 stadia from the sea. The merchants of Gerrha generally carry the Arabian merchandise and aromatics by land; but Aristobulus says, on the contrary, that they frequently travel into Babylonia on rafts, and thence sail up the Euphrates to Thapsacus[683] with their cargoes, but afterwards carry them by land to all parts of the country. 4. “On sailing further, there are other islands, Tyre[684] and Aradus,[685] which have temples resembling those of the Phœnicians. The inhabitants of these islands (if we are to believe them) say that the islands and cities bearing the same name as those of the Phœnicians are their own colonies.[686] These islands are distant from Teredon ten days’ sail, and from the promontory at the mouth of the gulf at Macæ one day’s sail.