ASSAM, BURMA, AND CEYLON 179
and must strike the Yang-tse-Kiang somewhere north of
the province of Yunnan.
The one great river system of Burma is formed by the
[rawadi and its two affluents, the Chindwin, from the
north-west, and the Myinge, from the north-east. All the
smaller upper tributaries of the Irawadi, other than the
Chindwin, are lost in the northern mass of mountains.

100 MILF’

Boundary un...
Watershed —m mmo
F16. 58.~ Lower Basin of the Irawadi.

“5
Aalimays cn
Gost mae

which are ranged in narrow watersheds running north
and south——the home of the Kachin. The mountainous
character of the country extends through the Manipur
state, on the right bank of the Chindwin, to within
roo miles of its junction with the Irawadi. The country
to the east, however, becomes comparatively open, and
there are broad, high-level valleys in that part of Upper
Burma which lies between the Chindwin and the Irawadi
to the north-west of Mandalay. The Irawadi itself is