= Ce 
Table 2. 
Amount of evaporation and precipitation for St. Petersburg and 
two stations in Transcaspia. After BrırzkE Table 8. 
| be ra 
| > 2 © 5, 
| 2 5 a a a E 3 E 2 
Be] oe EN 2 | ee | ee 
N ES | RE See EZ =: ame 
St. Petersburg (average of 20 years’ observations) 
evaporation, mm. | 4| 5| 10| 24| 44| 63| 63| 46; 31! 18; 8] 4] 320 
precipitation,mm. 22 22| 23| 23| 42| 47| 66| 66| 50] 43] 36131| 470 
Tashkent (average of 14 years’ observations) 
evaporation, mm. 129 39! 87} 97|146}198 | 215] 201)139]) 88| 57] 43} 1339 
precipitation, mm. 41140! 66] 55] 17) 4) 1| 2| A| 21) 22)56) 328 
Suitan Bend S. E. of Merw (average of 2 years’ observations) 
104 
22 
194 
19 
526 
0 
157 
9 
466 
0 
296 
1 
109 
8 
64 
36 
2764 
176 
52 
28 
evaporation, mm. | 35 
302 | 459 
21 | 0 
precipitation, mm. 36 
I 
SECTION II. THE VEGETATION OF THE 
TRANSCASPIAN LOWLANDS 
CHAPTER 4 
Earlier Literature. 
The botanical literature on the Transcaspian lowlands is 
already large. During the first half of last century, Russian 
naturalists began to examine this country which was up till 
then, at least as regards natural history, an unknown land, 
and since then numerous memoirs have been published. 
Since the Russian occupation of these vast areas, they have 
