s, by the victorious Sienpi, who were sometimes broken into
independent tribes, and sometimes reunited under a supreme chief; till
at length, styling themselves _Topa_, or masters of the earth, they
acquired a more solid consistence, and a more formidable power. The Topa
soon compelled the pastoral nations of the eastern desert to acknowledge
the superiority of their arms; they invaded China in a period of
weakness and intestine discord; and these fortunate Tartars, adopting
the laws and manners of the vanquished people, founded an Imperial
dynasty, which reigned near one hundred and sixty years over the
northern provinces of the monarchy. Some generations before they
ascended the throne of China, one of the Topa princes had enlisted in
his cavalry a slave of the name of Moko, renowned for his valor, but who
was tempted, by the fear of punishment, to desert his standard, and
to range the desert at the head of a hundred followers. This gang of
robbers and outlaws swelled into a camp, a tribe, a numerous people,
distinguished by the appellation of _Geougen_; and their hereditary
chieftains, the posterity of Moko the slave, assumed their rank
among the Scythian monarchs. The youth of Toulun, the greatest of his
descendants, was exercised by those misfortunes which are the school of
heroes. He bravely struggled with adversity, broke the imperious yoke of
the Topa, and became the legislator of his nation, and the conqueror of
Tartary. His troops were distributed into regular bands of a hundred
and of a thousand men; cowards were stoned to death; the most splendid
honors were proposed as the reward of valor; and Toulun, who had
knowledge enough to despise the learning of China, adopted only such
arts and institutions as were favorable to the military spirit of his
government. His tents, which he removed in the winter season to a more
southern latitude, were pitched, during the summer, on the fruitful
banks of the Selinga. His conquests stretched from Corea far beyond the
River Irtish. He vanquished, in the country to the north of the Caspian
Sea, the nation of the _Huns_; and the new title of _Khan_, or _Cagan_,
expressed the fame and power which he derived from this memorable
victory.

The chain of events is interrupted, or rather is concealed, as it passes
from the Volga to the Vistula, through the dark interval which separates
the extreme limits of the Chinese, and of the Roman, geography. Yet the
temper of the Barbarians,