Africa extended southward to the land of Ethiop and no farther, but Asia was a recognised geographical entity, less vague and nebulous even than the western isles from whence the Ph[oe]nicians brought their tin. There were certain fables current among the Greeks touching the one-eyed Arimaspians, the gold-guarding griffins, and the Hyperboreans, which in the middle of the sixth century were still credited, and almost indicate an indefinite geographical conception of northern Asiatic regions. But it is probable that much more was known of Asiatic geography in these early years than can be gathered from the poems and fables of Greek writers before the days of Herodotus and of professional geography. There were no means of recording knowledge ready to the hand of the colonist and commercial traveller then; even the few literary men who later travelled for the sake of gaining knowledge were dependent largely on information obtained scantily and with difficulty from others, and the expression of their knowledge is crude and imperfect. But what should we expect even in present times if we proceeded to compile a geographical treatise from the works of Milton and Shakespere? What indeed would be the result of a careful analysis of parliamentary utterances on geographical subjects within, say, the last half century? Would they present to future generations anything approaching to an accurate epitome of the knowledge really possessed (though possibly not expressed) by those who have within that period almost exhausted the world's store of geographical record? The analogy is a perfectly fair one. Geographers and explorers are not always writers even in these days, and as we work backwards into the archives of history nothing is more astonishing than the indications which may be found of vast stores of accurate information of the earth's physiography lost to the world for want of expression.
It was between the sixth century B.C. and the days of Herodotus that Miletus was destroyed, and captive Greeks were transported by Darius Hystaspes from the Lybian Barké to Baktria, where we find traces of them again under their original Greek name in the northern regions of Afghanistan. It was long ere the days of Darius that the hosts of Assyria beat down the walls of Samaria and scattered the remnants of Israel through the highlands of Western Asia. Where did they drift to, these ten despairing tribes? Possibly we may find something to remind us of them also in the northern Afghan hills.