Lab
Library
Journal
Shop
Sign in
to keep
Share image
1
210
The Fairy-Land of Science
·
Arabella B. Buckley
167
We
can
easily
make
coal-gas
here
in
this
room.
I
have
brought
a
tobacco-pipe,
the
bowl
of
which
is
filled
with
a
little
powdered
coal,
and
the
broad
end
cemented
up
with
Stourbridge
clay.
When
we
place
this
bowl
over
a
spirit-lamp
and
make
it
very
hot,
the
gas
is
driven
out
at
the
narrow
end
of
the
pipe
and
lights
easily
(see
Fig.
53).
This
is
the
way
all
our
gas
is
made,
only
that
furnaces
are
used
to
bake
the
coal
in,
and
the
gas
is
passed
into
large
reservoirs
till
it
is
wanted
for
use.
You
will
find
it
difficult
at
first
to
understand
how
coal
can
be
so
full
of
oil
and
tar
and
gases,
until
you
have
tried
to
think
over
how
much
of
all
these
there
is
in
plants,
and
especially
in
seeds
-
think
of
the
oils
of
almonds,
of
lavender,
of
cloves,
and
of
caraways;
and
the
oils
of
turpentine
which
we
get
from
the
pines,
and
out
of
which
tar
is
made.
When
you
remember
these
and
many
more,
and
also
how
the
seeds
of
the
club-moss
now
are
largely
charged
with
oil,
you
will
easily
imagine
that
the
large
masses
of
coal-plants
which
have
been
pressed
together
and
broken
and
crushed,
would
give
out
a
great
deal
of
oil
which,
when
made
very
hot,
rises
up
as
gas.
You
may
often
yourself
see
tar
oozing
out
of
the
lumps
of
coal
in
a
fire,
and
making
little
black
bubbles
which
burst
and
burn.
It
is
from
this
tar
that
James
Young
first
made
the
paraffin
oil
we
burn
in
our
lamps,
and
the
spirit
benzoline
comes
from
the
same
source.
Marker
Marker
Fine marker
White-out
Fine white-out
Circle
Paint
Unmarker
Hand
Scalpel
Dice
Sieve
Purify
Undo
Redo
Start over
