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Rh and their merchants purchased from the Chinese the raw or manufactured silk which they transported into Persia for the use of the Roman empire. In the vain capital of China, the Sogdian caravans were entertained as the suppliant embassies of tributary kingdoms, and, if they returned in safety, the bold adventure was rewarded with exorbitant gain. But the difficult and perilous march from Samarcand to the first town of Shensi could not be performed in less than sixty, eighty, or one hundred days; as soon as they had passed the Jaxartes, they entered the desert; and the wandering hords, unless they are restrained by armies and garrisons, have always considered the citizen and the traveller as the objects of lawful rapine. To escape the Tartar robbers and the tyrants of Persia, the silk caravans explored a more southern road; they traversed the mountains of Thibet, descended the streams of the Ganges or the Indus, and patiently expected, in the ports of Guzerat and Malabar, the annual fleets of the West. But the dangers of the desert were found less intolerable than toil, hunger, and the loss of time; the attempt was seldom renewed ; and the only European who has passed that unfrequented way applauds his own diligence, that in nine months after his departure from Pekin he reached the mouth of the Indus. The ocean, however, was open to the free communication of mankind. From the great river to the tropic of Cancer, the provinces of China were subdued and civilized by the emperors of the North; they were filled about the time of the Christian æra with cities and men, mulberry-trees and their precious inhabitants; and, if the Chinese, with the knowledge of the compass, had possessed the genius of the Greeks or Phœnicians, they might have spread their discoveries over the southern hemisphere. I am not qualified to examine, and I am not disposed to believe, their distant voyages to the Persian gulf