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172
Wonderful Balloon Ascents; Or, The Conquest of the Skies
·
Fulgence Marion
26
The
operation
of
inflating
a
balloon
with
pure
hydrogen
is
represented
in
the
engraving
on
the
next
page.
Shavings
of
iron
and
zinc,
water,
and
sulphuric
acid,
occupy
a
number
of
casks,
which
communicate,
by
means
of
tubes,
with
a
central
cask,
which
is
open
at
the
bottom,
and
is
plunged
in
a
copper
full
of
water.
The
gas
is
produced
by
the
action
of
the
water
and
the
sulphuric
acid
upon
the
zinc
and
the
iron
this
is
hydrogen
mixed
with
sulphuric
acid.
In
passing
through
the
central
copper,
or
vat,
full
of
water,
the
gas
throws
off
all
impurities,
and
comes,
unalloyed
with
any
other
matter,
into
the
balloon
by
a
long
tube,
leading
from
the
central
vats.
In
order
to
facilitate
the
entrance
of
the
gas
into
the
balloon
two
long
poles
are
erected.
These
are
furnished
with
pulleys,
through
which
a
rope,
attached
also
to
a
ring
at
the
top
of
the
balloon,
passes.
By
means
of
this
contrivance
the
balloon
can
be
at
once
lightly
raised
from
the
ground,
and
the
gas
tubes
easily
joined
to
it.
When
it
is
half
full
it
is
no
longer
necessary
to
suspend
the
balloon;
on
the
contrary,
it
has
to
be
secured,
lest
it
should
fly
off.
A
number
of
men
hold
it
back
by
ropes;
but
as
the
force
of
ascension
is
every
moment
increasing,
the
work
of
restraining
the
balloon
is
most
difficult
and
exciting.
At
length,
all
preparations
being
complete,
the
car
is
suspended,
the
aeronaut
takes
his
seat,
the
words
“Let
go
all!”
are
shouted,
and
away
goes
the
silken
globe
into
space.
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