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natural zones stretch from east to west, their direction being 
determined by the general folding of the crust of the earth 
in the northern hemisphere of the Old World. They are 
(1) the Coast District or Tell, (2) the High Plateaux, and 
(3) the Desert or Sahara. 
The Tell comprises the northern Atlas, the mountains of 
the Kabyles and the lowlands between the ranges and the sea. 
It is a region of wooded hills and mountains and green plains 
and valleys, with a climate warmer than that of the Riviera, 
mild in winter, pleasantly warm in spring and autumn and 
often disagreeably hotinsummer. The vegetation is luxuriant, 
but so many tropical and subtropical plants have been intro- 
duced into the parks and gardens, where they thrive well, 
that the uninitiated visitor gets quite a wrong idea of the flora 
of Algeria. The town of Alger has a subtropical appearance 
on account of all the flowering trees and shrubs which adorn 
it, but the surroundings are purely Mediterranean. LEver- 
green Oaks, Cork Oak and Aleppo Pine are the prevalent trees 
in the woods, and the scrub or makis is likewise so similar to 
that of Southern Europe that, if you were suddenly trans- 
ferred from a makis near Hyeres to a makis in the Tell, you 
would not notice from the plants that you were south of the 
Mediterranean instead of north. In the open the olive tree 
is much in evidence everywhere, and the inevitable Australian 
Eucalypti are planted in many places to the disgust of the 
Entomologist. The dwarf palm (Chamaerops humilis) is one 
of the characteristic plants of the Tell zone. Urginea maritima, 
Ornithogalum, Allium, Asphodelus, various Crocus and Iris, 
Cistus, Genista, Eryngium and Lavatera may be mentioned 
from among the common plants which would catch the eye 
of a visitor from Northern Europe. As the country rises 
from sea-level to above 7000 ft., the fauna and flora vary 
much according to locality, and there are still many districts 
in the mountains where little collecting has been done. Accom- 
modation in the hills is often missing in places which look 
most promising for the naturalist, and though one can go 
anywhere by rail, motor or mule, one would require to fit out 
a camp to explore the out-of-the-way localities, which is both 
cumbersome and costly. The average collector is confined to 
