The Straits by which we enter the Arabian Gulf are by the Portuguese called Babelmandeb, which is nonsense. The name by which it goes among the natives is Babelmandeb, the Gate or Port of Affliction. And near it Ptolemy[289] places a town he calls, in the Greek, Mandaeth, which appears to me to be only a corruption of Mandeb. The Promontory that makes the south side of the Straits, and the city thereupon, is _Diræ_, which means the Hades, or Hell, by Ptolemy[290] called Δηρη. This, too, is a translation of the ancient name, because Δηρη (or Diræ) has no signification in the Greek. A cluster of islands you meet in the canal, after passing Mocha, is called Jibbel Zekir, or, the Islands of Prayer for the remembrance of the dead. And still, in the same course up the Gulf, others are called Sebaat Gzier, Praise or Glory be to God, as we may suppose, for the return from this dangerous navigation. All the coast to the eastward, to where Gardefan stretches out into the ocean, is the territory of Saba, which immemorially has been the mart of frankincense, myrrh, and balsam. Behind Saba, upon the Indian Ocean, is the _Regio Cinnamonifera_, where a considerable quantity of that wild cinnamon grows, which the Italian druggists call _canella_. Inland near to Azab, as I have before observed, are large ruins, some of them of small stones and lime adhering strongly together. There is especially an aqueduct, which brought formerly a large quantity of water from a fountain in the mountains, which must have greatly contributed to the beauty, health, and pleasure of Saba. This is built with large massy blocks of marble, brought from the neighbouring mountains, placed upon one another without lime or cement, but joined with thick cramps, or bars of brass. There are likewise a number of wells, not six feet wide, composed of pieces of marble hewn to parts of a circle, and joined with the same bars of brass also. This is exceedingly surprising, for Agatharcides[291] tells us, that the Alileans and Cassandrins, in the southern parts of Arabia, (just opposite to Azab), had among them gold in such plenty, that they would give double the weight of gold for iron, triple its weight for brass, and ten times its weight for silver; that, in digging the earth, they found pieces of gold as big as olive-stones, but others much larger.