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163
Symzonia: Voyage of Discovery
·
Captain Adam Seaborn
97
In
the
first
place,
the
sun's
direct
influence
is
exerted,
on
an
equal
portion
of
the
globe
at
all
times;
which
influence
is
felt,
on
the
external
surface,
only
where
it
is
directly
exerted.
In
such
places
it
is
felt
intensely,
but
from
the
free
action
of
the
external
atmosphere,
so
soon
as
that
influence
is
withdrawn
the
heat
escapes
and
flies
off
rapidly,
generating
cold
in
its
passage,
or
by
evaporation
as
we
express
it.
Those
parts
of
the
external
world
from
which
the
influence
of
the
sun
is
withdrawn
for
the
greatest
length
of
time
thus
become
intensely
cold,
excepting
in
the
immediate
vicinity
of
the
polar
openings,
where
the
issue
of
warm
air,
from
the
internal
cavity,
tempers
the
atmosphere:
but
at
a
short
distance
from
the
verge
of
the
opening
the
very
influence
of
this
warm
air
generates
cold,
by
parting
rapidly
with
its
latent
heat
and
condensing
into
snow
and
hail,
which
causes
the
circle
of
ice
between
the
70th
and
80th
degrees
of
latitude,
called
the
"icy
hoop."
This
escape
of
heat
from
the
warm
air
which
issues
from
the
internal
world,
is
so
great
as
to
irradiate
the
atmosphere
near
the
polar
openings;
and
in
the
extreme
cold
of
winter,
during
the
absence
of
the
sun,
this
irradiation
is
so
vivid
as
to
be
visible
fifty
degrees
towards
the
equator,
where
the
inhabitants,
being
fond
of
simple
names,
call
it
Aurora
Borealis.
On
the
other
hand,
as
an
equal
portion
of
the
globe
is
at
all
times
acted
upon
directly
by
the
sun's
rays,
the
internal
contents
of
that
globe
must
be
always
subject
to
the
same
degree
of
heat,
excepting
such
variations
as
may
be
occasionally
produced
by
the
direct
rays
of
the
sun
admitted
through
the
polar
openings.
Of
this
fact
we
had
evidence
on
the
external
world,
where,
in
the
most
intense
cold
weather,
we
had
but
to
penetrate
a
short
distance
into
the
earth
to
escape
its
influence.
The
temperature
of
mines,
dug
a
short
distance
into
the
earth,
was
always
above
the
freezing
point;
and
the
degree
of
heat
at
a
given
distance
below
the
general
surface
of
the
earth,
was
found
to
be
nearly
the
same
in
all
latitudes,
and
at
all
seasons.
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