BOOK V. GEOGRAPHY. 481 
MONT BLANC (ALPS). 
Lat. 44°. N. — Height, 15,600 Feet. 
Elevation 
in Feet. 
Mean Temperature. 
Vegetation. 
0 
0 
1,950 
2,925 
3,900 
4,680 
5,850 
6,695 
7,800 
8, 1 90 
8,780 
Of August - 69° 
Of the year - 53° 
Of the year - 32° 
The vine ceases. 
Castanea vesca ceases. 
Oaks cease. 
Betula alba ceases. 
Pinus Abies ceases. 
^ Rhododendrons cease. 
Salix herbacea ceases. 
Limits of perpetual snow. 
MONT PERDU (PYRENEES). 
Lat. 44°. N. — Height, 11,375 Feet. 
Elevation 
in Feet. 
Mean Temperature. 
Vegetation. 
3,250 
5,280 
6,175 
7,800 
8,780 -j^ 
Of the year - 42° 
Of August - 42° 
Of the year - 25° 
Oaks cease to grow. 
Pinus picea ceasse. 
Pinus rubra and uncinata cease. 
^ Limits of perpetual snow. 
SULITELMA 
(LAPLAND). 
Lat. 6S° N. — 
Height, 6,175. 
Elevation 
in Fe. 
Mean Temperature. 
Vegetation. 
r 
°i 
957 
1,950 1 
2,925 
3,640 1 
Of the year - 34° 
Of August - 60° 
Of the year - 31° 
Ditto - 27° 
Of August - 54° 
Of the year - 21° 
Of August - 49° 
Pinus sylvestris ceases. 
^ Betula alba ceases. 
Salix herbacea and lanceolata cease. 
^ Limits of perpetual snow. 
I 
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