by many travellers. Thus Captain Lyon states that "In Soudan, beyond the desert, in the countries abounding in gold, there dwells an invisible nation who are said to trade only by night. Those who come to traffic for their gold, lay their merchandise in heaps, and retire. In the morning they find a certain quantity of gold dust placed against every heap, which, if they think sufficient, they leave the goods, if not, they let them both remain until more of the precious ore is added."[1] Hoest says the same thing in the case of very large caravans, from Marocco to Timbuctoo. "The Moors enter not into the Negro country, but only go to a certain place on the frontiers, where one of each party exhibits and exchanges the goods, without scarcely opening their lips."[2]
The commercial policy of Carthage. The commercial treaties between Carthage and Rome, to which fuller reference will hereafter be made, show that if the duties levied were in some cases heavy, they were not differential or protective, but chiefly with the object of securing a sufficient revenue. That, like all commercial nations, the Carthaginians were jealous of competitors need not be doubted, but while other nations were content with profits derived from intercourse among their own people, Tyre and Carthage sought the trade of all nations and erected entrepôts where required for this commerce.
At the same time, it must be borne in mind that free trade, pure and simple, as now understood, could, in ancient times, have been possible only with a very considerable modification; especially where, as was the case with Carthage and Tyre, a large portion of the dealings with barbarous nations was
