228 Geographical Notices. 
different region. This long low mostly dry bed of what must 
formerly have been one continuous lake extending from the 74th 
to the 82d meridian east of Greenwich, forms a marked divi : 
line between the mountain-systems and general physical features — 
of Central Asia on the south, and Siberia on the north. From ~ 
this line onward we encounter a continuous series of m : 
Alp-lands, rising height above height till they at last blend with = 
the Thian- schan, the most central of the mountain ranges of 
This line too forms a natural limit, north of which we no longer | 
find many of the vegetable growths or the animals of Central — 
Asia, such for instance as the Populus diversifolia and the Pyris— 
Sieversiana among seatg or the tiger, the hedgehog, the 2 
ant, &c. ue anima 
e physical geographer for its union : 
many different zones with their diverse charaterisi of oi ' 
| years, 
by theit Te 
oor take up their march around the southern shore 
alkhasch, either northwest toward Europe, or southwest 
-Turan, Southern and Western Asia. 
The Ili divides this portion of Central Asia into two pats 
. fe northern called “the land of seven rivers,” the we 
; Se, we across eR Ili,” (Transilian,) names given them by 
early 
. Hodes distinctive features of this region are its three joy Alp 
n 
the 
1. The ‘Dzungatiseh Alactau, (closely connected with ; 
Talki-chain that the puke and Tie Tli valleys,) ' a a 
ripen ll ea dbermag \oclieb eadiery and a peak altibud ag 
a “The Ala-tau wate the Ili,” between the Ili cage 
yk-kul plateau, with a medium ridge altitude of ao 
and a peak altitude of not far from 14,000 to 15, 000 feet} ® 
* Seuenow's measurements areal given in Paris feet. 
