186 PHYSICAL GEOGRAPHY. [CHAP. passages in Diodorus, which refer to that region, are derived from the same source. As Agatharchides passed chides?"1" the latter P^ of his life at Akxandria, where he was tutor to the young king, Ptolemy Soter II (Lathyrus), he enjoyed ample opportunities of obtaining information about the coast of the Red Sea and the Indian Ocean, and the interior of the neighbouring countries of Aethiopia and Arabia. It was through his book that the fame of the wealth and prosperity of the Sabaeans in the south-west corner of Arabia—the modern Yemen—was popularly known, so that the name of Arabia Felix became attached to that country. Among other subjects, he paid especial attention to the mode of life of the tribes in those regions; but the most interesting part of his narrative relates to the mode of working the Aethiopian gold-mines near the Egyptian coast of the Red Sea, which he has described in much detail, and the hardships suffered by the slave population who were employed in them. These, he tells us, in some cases were prisoners taken in war, in others condemned criminals, or persons who had been made the victims of calumny; and not infrequently their whole families were consigned to the same terrible fate. "Those who are thus condemned to penal servitude, being very numerous, and all in fetters, are kept con- 0fHthe^ethio- stantly at work both by day and night without any pi" ^°ld" repose, and are jealously guarded to prevent their escape; for they are watched by companies of barbarian soldiers who speak a language different from theirs, to prevent their winning any of them over by friendly intercourse or appeals to their humanity...... Unkempt, untended as they are, without even a rag to hide their shame, the awful misery of these sufferers'is a spectacle to move the hardest heart. None of them, whether sick or maimed or aged, not even weak women, meet with compassion or respite; all are forced by blows to work without intermission, until they expire under this hard treatment. So overpowering is their affliction, that they are ever anticipating worse evils in the future, and welcome death as a blessed change from life." The following is the description of the method of working in the mines and of the preparation of the ore: