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AURUM. 97
they might have coasted along as far as the Guinea coast. No further mention is to be found of gold from Africa; and, still more extraordinary, he does not allude to the very extensive workings carried on in his days in Egypt. The first may be explained easily: the Carthaginians kept all their gold at home, they had no metallic currency (until a much later period), and their exports were entirely manufactures, which in all their com­merce they bartered against the precious metals.
As for India, whence the Persian kings derived a vast amount of gold as tribute, he had obtained no real information. The Persians told a story of the northernmost Indians, next to the Bactrians, who went out into the sandy Desert on camels to steal the gold-dust that was scraped up by enormous ants as big as foxes. But this metal was procured from Thibet by caravans, for India itself has no gold-mines, as the Greeks under Alexander found to their inexpressible disappointment. India drained the Roman empire of gold in return for its gems, spices, and silk, as it, with China, does Europe at the present day of its silver. The Periplus of the Bed Sea gives an exact notion of the Roman trade with that country ; the Indian exports were then precisely the same as they were a century ago, or before the cotton manu­facture was established in Europe. The Romans paid for all this in ready money, having no commodities except amber, coral, copper, and lead, to exchange for these Indian productions.2
Yet, from whatever sources derived, the quantity of gold accu­mulated by the princes of Asia Minor was absolutely incredible. The gold-washings of the Pactolus alone furnished the gifts sent by Croesus to Delphi ; seen by Herodotus himself, and of which he has recorded the weight (i. 50). There were 117 oblong ingots (ήμπτλίνθια), each 18 inches long by 9 wide and 3 thick. Of these four were of refined gold, weighing each 1-1/2 talent (90 lbs.) : all the others of "pale gold," i.e. electrum, and weighing each 2 talents (120 lbs.) ; a distinction proving clearly the difficulty then experienced in separating the native alloy from the metal.
 
 

 
 
 
 
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