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H
eat a
ects pla
it is necessary for trans
from the surface of the eart
movement of the air
its di
erent ingredients
a nd moist
clear and hazy
h e heat requi r ed by plants for transpiration and gro
T
must be supplie
or through the soil
r ation must cease as soon as the plant has expen ded
tran spi
h e sto r e of heat whic h it contains
t
quently does not take pl
h e plant
to t
b e so far reduced that the f
h e temp
t
ratu
h at point
above t
The important source of atmospheric
h
nce
the temperature of a locality d
o n its
a nce from the equato r
the dist
r th more obliqu
the ea
h e equator toward s t h e poles
t
in
Vicinit
r eases one deg r e
ture dec
proceeding no
called
h ere on the earth
now
h e
t
h e following deserve a
which t
The temp
the
lps
the fall is
el
vation
i t is about
r easing latitud
inc
O
IT
Y
AND
t life in various ways
i
which prod uces a thorou
as well as that of warm and cold
to th
m
If these a
a ce until ser
in other word s
r e of the surrounding air is
h e m
T
a
ly in p
of
r th
The climate thus produced i s f
or
because it is modified and convert
r
o
r
ratu
falls with the elevation above the sea
FO
T V
A
T
r ation
the plants and evapo ration
h
secondly
a ir
atmo sphere
r e th
mselves deficient in
ous damage has been done
tempe
r eezing poin
annual tempe
because the sun
r oc
ding north
h e centre of
In t
r ee of latitude
deg
for about
by a series of influenc
tention
r
degree fo
r apid as the fall caused by
times as
ff
ct of el
vation upon t
G
T
TI O
In the fi
it govern s the
h mixture of
either di
This
howev
r ature of the plant may
i s reach
d
till sev
ral d
eat i s the sun
pend s in the first place
r ature decrease s with
s rays strike
sout
h e t
t
r y
ve
It exists practically
r y
ve
to
r st place
dry
th
r ectly
h eat
r
although
grees
h f r om
urope and
mpera
mile s on
r equently
d into
s
amongst
In
feet of
r atu r
mp
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