418 TEEN-SHAN MOUNTAINS. 
The case is very different with the country limit- 
ed by the second and third systems, the Teen-shan 
and Kwan-lun ranges; it being closed to the west by 
a transverse ridge, which runs north and south, un- 
der the name of Bolor or Belour-tagh. This chain 
separates Little Bucharia from Great Bucharia, the 
country of Cashgar, Badakshan, and Upper Djji- 
houn. Its southern part, which is connected with 
the Kwan-lun system, forms a part of the Tsung- 
ling of the Chinese. To the north it joins the chain 
which passes to the north-west of Cashgar. Be- 
tween Khokand, Dervagel, and Hissar, conse- 
quently between the still unknown sources of the 
Sihon and Amou-deria, the Teen-shan rises be- 
fore lowering again in the Kanat of Bochara, and 
presents a group of high mountains, several of which 
are covered with snow even in summer. More to 
the east it is less elevated. The road from Semi- 
polatinsk to Cashgar passes to the east of Lake 
Balkachi and to the west of Lake Ossi-koul, and 
crosses the Narim, a tributary of the Sihon. At 
the distance of 6935 miles from the Narim to the 
south, it passes over the Rovat, which has a large 
cave, and is the highest point before arriving at the 
Chinese post to the south of the Ak-sou, the village 
of Artuche, and Cashgar. This city, which is built 
on the banks of the Ara-tumen, has 15,000 houses 
and 80,000 inhabitants, although it is smaller than 
Samarcand. 
The western prolongation of the Teen-shan or 
the Mouz-tagh, is deserving of particular exami- 
nation. At the point where the Bolor or Be- 
lour-tagh joins the Mouz-tagh at right angles, the 
latter continues to run without interruption from 
