Part of this trade, when at its greatest perfection, was carried on in vessels with oars. We know from the prophet Ezekiel[165], 700 years before Christ, or 300 after Solomon had finished his trade with Africa and India, that they did not always make use of sails in the track of the monsoons; and consequently a great number of men must have been necessary for so tedious a voyage. A number of men being necessary, a quantity of water was equally so; and this must have taken up a great deal of stowage. Now, no where on the coast of Abyssinia could they want water two days; and scarce any where, on the coast of Arabia, could they be sure of it once in fifteen, and from this the western coast was called _Ber el Ajam_[166], corruptly Azamia, _the country of water_, in opposition to the eastern shore, called _Ber el Arab_, where there was none. A deliberate survey became absolutely necessary, and as in proportion to the danger of the coast pilots became more skilful, when once they had obtained more complete knowledge of the rocks and dangers, they preferred the boldest shore, because they could stand on all night, and provide themselves with water every day. Whereas, on the Arabian side, they could not sail but half the day, would be obliged to lie to all night, and to load themselves with water, equal to half their cargo. I now shall undertake to point out to large ships, the way by which they can safely enter the Gulf of Suez, so as that they may be competent judges of their own course, in case of accident, without implicitly surrendering themselves, and property, into the hands of pilots. In the first place, then, I am very confident, that, taking their departure from Jibbel el Ourée, ships may safely stand on all night mid-channel, until they are in the latitude of Yambo. The Red Sea maybe divided into four parts, of which the Channel occupies two, till about lat. 26°, or nearly that of Cosseir. On the west side it is deep water, with many rocks, as I have already said. On the east side, that quarter is occupied by islands, that is, sand gathered about the rocks, the causes whereof I have before mentioned; between which there are channels of very deep water, and harbours, that protect the largest ships in any winds. But among these, from Mocha down to Suez, you must sail with a pilot, and during part of the day only.