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The
Trade
-
winds
bring
a
constant
succession
of
clouds
or
mists
in
which
immense
quantities
of
electricity
not
completely
exhausted
by
storms
,
are
stored
.
Hence
there
exists
a
formidable
accumulation
of
electric
fluid
at
the
poles
,
and
it
flows
towards
the
land
in
a
permanent
stream
.
From
this
cause
come
the
northern
and
southern
auroras
,
whose
luminous
splendours
shine
above
the
horizon
,
especially
during
the
long
polar
night
,
and
are
visible
even
in
the
temperate
zones
when
they
attain
their
maximum
of
culmination
.
These
continuous
currents
at
the
poles
,
which
bewilder
our
compasses
,
must
possess
an
extraordinary
influence
.
And
it
would
suffice
that
a
block
of
iron
should
be
subjected
to
their
action
for
it
to
be
changed
into
a
magnet
of
power
proportioned
to
the
intensity
of
the
current
,
to
the
number
of
turns
of
the
electric
helix
,
and
to
the
square
root
of
the
diameter
of
the
block
of
magnetized
iron
.
Thus
,
then
,
the
bulk
of
the
sphinx
which
upreared
its
mystic
form
upon
this
outer
edge
of
the
southern
lands
might
be
calculated
by
thousands
of
cubic
yards
.
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Now
,
in
order
that
the
current
should
circulate
around
it
and
make
a
magnet
of
it
by
induction
,
what
was
required
?
Nothing
but
a
metallic
lode
,
whose
innumerable
windings
through
the
bowels
of
the
soil
should
be
connected
subterraneously
at
the
base
of
the
block
.
It
seemed
to
me
also
that
the
place
of
this
block
ought
to
be
in
the
magnetic
axis
,
as
a
sort
of
gigantic
calamite
,
from
whence
the
imponderable
fluid
whose
currents
made
an
inexhaustible
accumulator
set
up
at
the
confines
of
the
world
should
issue
.
Our
compass
could
not
have
enabled
us
to
determine
whether
the
marvel
before
our
eyes
really
was
at
the
magnetic
pole
of
the
southern
regions
.
All
I
can
say
is
,
that
its
needle
staggered
about
,
helpless
and
useless
.
And
in
fact
the
exact
location
of
the
Antarctic
Sphinx
mattered
little
in
respect
of
the
constitution
of
that
artificial
loadstone
,
and
the
manner
in
which
the
clouds
and
metallic
lode
supplied
its
attractive
power
.
In
this
very
plausible
fashion
I
was
led
to
explain
the
phenomenon
by
instinct
.
It
could
not
be
doubted
that
we
were
in
the
vicinity
of
a
magnet
which
produced
these
terrible
but
strictly
natural
effects
by
its
attraction
.
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I
communicated
my
idea
to
my
companions
,
and
they
regarded
this
explanation
as
conclusive
,
in
presence
of
the
physical
facts
of
which
we
were
the
actual
witnesses
.
We
shall
incur
no
risk
by
going
to
the
foot
of
the
mound
,
I
suppose
,
said
Captain
Len
Guy
.
None
,
I
replied
.