legal limit, especially in Manchuria and the Upper Yenisei plateau.
To sum up, therefore, it can be concluded that although mountain ranges, plateaus and uninhabited areas have created a fairly well-defined geographical and political frontier between Southern Siberia and North- West Outer China, nevertheless no real economic or fiscal barrier exists between the people inhabiting either side of the borders.
3. ADMINISTRATIVE AUTHORITIES IN MONGOLIA
Chinese authority in Mongolia has up to the time of the recent revolution been represented by two military governors, known to the world as Tartar generals, and to the Chinese themselves as "Dzan Dzuns." One of them ruled Eastern or Inner Mongolia, residing at Koko-Hotu, and the other ruled Western or Outer Mongolia residing at Uliassutai. Up to the present time these Tartar generals have all been Manchus, for the highest military posts outside the Great Wall have always in the past been monopolized by the ruling caste in China. Since the revolution many of these Manchus have been forcibly replaced by Republican leaders who have assumed powers as arbitrary as those of their predecessors. On the other hand, such is the vastness of Outer China that certain areas seem as yet to have been unaffected by the revolution, and the Manchu generals are still in possession of a few posts outside the Great Wall. The two military governor-generals of Outer China devolve their administration upon five so-called "Hebee Ambans" residing at Kalgan, Senin, Koko-Hotu, Uliassutai and Kobdo. Beneath
