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- Жюль Верн
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- Путешествие на Луну
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- Стр. 88/99
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The
entrance
into
this
metallic
tower
was
by
a
narrow
aperture
contrived
in
the
wall
of
the
cone
.
This
was
hermetically
closed
by
a
plate
of
aluminum
,
fastened
internally
by
powerful
screw-pressure
.
The
travelers
could
therefore
quit
their
prison
at
pleasure
,
as
soon
as
they
should
reach
the
moon
.
Light
and
view
were
given
by
means
of
four
thick
lenticular
glass
scuttles
,
two
pierced
in
the
circular
wall
itself
,
the
third
in
the
bottom
,
the
fourth
in
the
top
.
These
scuttles
then
were
protected
against
the
shock
of
departure
by
plates
let
into
solid
grooves
,
which
could
easily
be
opened
outward
by
unscrewing
them
from
the
inside
.
Reservoirs
firmly
fixed
contained
water
and
the
necessary
provisions
;
and
fire
and
light
were
procurable
by
means
of
gas
,
contained
in
a
special
reservoir
under
a
pressure
of
several
atmospheres
.
They
had
only
to
turn
a
tap
,
and
for
six
hours
the
gas
would
light
and
warm
this
comfortable
vehicle
.
There
now
remained
only
the
question
of
air
;
for
allowing
for
the
consumption
of
air
by
Barbicane
,
his
two
companions
,
and
two
dogs
which
he
proposed
taking
with
him
,
it
was
necessary
to
renew
the
air
of
the
projectile
.
Now
air
consists
principally
of
twenty-one
parts
of
oxygen
and
seventy-nine
of
nitrogen
.
The
lungs
absorb
the
oxygen
,
which
is
indispensable
for
the
support
of
life
,
and
reject
the
nitrogen
.
The
air
expired
loses
nearly
five
per
cent
.
of
the
former
and
contains
nearly
an
equal
volume
of
carbonic
acid
,
produced
by
the
combustion
of
the
elements
of
the
blood
.
In
an
air-tight
enclosure
,
then
,
after
a
certain
time
,
all
the
oxygen
of
the
air
will
be
replaced
by
the
carbonic
acid
--
a
gas
fatal
to
life
.
There
were
two
things
to
be
done
then
--
first
,
to
replace
the
absorbed
oxygen
;
secondly
,
to
destroy
the
expired
carbonic
acid
;
both
easy
enough
to
do
,
by
means
of
chlorate
of
potassium
and
caustic
potash
.
The
former
is
a
salt
which
appears
under
the
form
of
white
crystals
;
when
raised
to
a
temperature
of
400
degrees
it
is
transformed
into
chlorure
of
potassium
,
and
the
oxygen
which
it
contains
is
entirely
liberated
.
Now
twenty-eight
pounds
of
chlorate
of
potassium
produces
seven
pounds
of
oxygen
,
or
2,400
litres
--
the
quantity
necessary
for
the
travelers
during
twenty-four
hours
.
Caustic
potash
has
a
great
affinity
for
carbonic
acid
;
and
it
is
sufficient
to
shake
it
in
order
for
it
to
seize
upon
the
acid
and
form
bicarbonate
of
potassium
.
By
these
two
means
they
would
be
enabled
to
restore
to
the
vitiated
air
its
life
-
supporting
properties
.
It
is
necessary
,
however
,
to
add
that
the
experiments
had
hitherto
been
made
in
anima
vili
.
Whatever
its
scientific
accuracy
was
,
they
were
at
present
ignorant
how
it
would
answer
with
human
beings
.
The
honor
of
putting
it
to
the
proof
was
energetically
claimed
by
J.
T.
Maston
"
Since
I
am
not
to
go
,
"
said
the
brave
artillerist
,
"
I
may
at
least
live
for
a
week
in
the
projectile
.
"
It
would
have
been
hard
to
refuse
him
;
so
they
consented
to
his
wish
.
A
sufficient
quantity
of
chlorate
of
potassium
and
of
caustic
potash
was
placed
at
his
disposal
,
together
with
provisions
for
eight
days
.
And
having
shaken
hands
with
his
friends
,
on
the
12th
of
November
,
at
six
o'clock
A.
M.
,
after
strictly
informing
them
not
to
open
his
prison
before
the
20th
,
at
six
o'clock
P.
M.
,
he
slid
down
the
projectile
,
the
plate
of
which
was
at
once
hermetically
sealed
.
What
did
he
do
with
himself
during
that
week
?
They
could
get
no
information
.
The
thickness
of
the
walls
of
the
projectile
prevented
any
sound
reaching
from
the
inside
to
the
outside
.
On
the
20th
of
November
,
at
six
P.
M.
exactly
,
the
plate
was
opened
.
The
friends
of
J.
T.
Maston
had
been
all
along
in
a
state
of
much
anxiety
;
but
they
were
promptly
reassured
on
hearing
a
jolly
voice
shouting
a
boisterous
hurrah
.
Presently
afterward
the
secretary
of
the
Gun
Club
appeared
at
the
top
of
the
cone
in
a
triumphant
attitude
.
He
had
grown
fat
!
On
the
20th
of
October
in
the
preceding
year
,
after
the
close
of
the
subscription
,
the
president
of
the
Gun
Club
had
credited
the
Observatory
of
Cambridge
with
the
necessary
sums
for
the
construction
of
a
gigantic
optical
instrument
.
This
instrument
was
designed
for
the
purpose
of
rendering
visible
on
the
surface
of
the
moon
any
object
exceeding
nine
feet
in
diameter
.
