longitude, which culminates in the Altyn Tagh, and extends eastwards in a continuous water-divide to the Nan Shan mountains, north of the Koko Nor basin.
This branch is probably continued in the range which overhangs the Koko-nor on the south, namely, the south Kokonor Range.
(9000 to 10,000 at the south-western border) and dotted with lakes (Koko-nor, 9970 ft.; Khara-nor, 13,285 ft.), fill up the space between these mountain ranges.
Mesny, has observed similar evidences of the existence of gold at comparatively shallow depths in Koko Nor region, and records that he has seen nuggets, " varying from the size of a pea to that of a hazel-nut," in eastern Tibet.
- Tibetans divide their country into five provinces: (i) Amdo, which comprises that part of the Chinese province of Kansuh which is inhabited by Tibetans, and Koko Nor region, extending southwards to the Yellow river and westwards as far as the Tsaidam.