49 / 230
CONTINUOUS
DISTILLATION.
49
The
still
here
represented
is
made
of
metal,
as
usual,
but
having
one
internal
division
a
a)
this
forms
the
still
into
two
compartments;
these
are
both
charged
with
wash,
or
other
liquid
intended
for
distillation.
The
still
being
heated
by
the
furnace
below,
the
vapour
from
the
lower
compartment
will
be
driven
through
the
tube
5,
and
descend
by
the
bent
pipes
c
c into
the
wash
of
the
upper
compartment,
or
from
the
tube
J,
without
the
bent
pipe
;
the
vapour
may
be
dispersed
above
the
surface
of
the
liquor
within
the
still,
by
the
intervention
of
a
plate
placed
over
the
tube
6,
by
a
pipe
dy
up
to
the
vessel
of
water,
and
descend
again
by
the
pipe
e
into
the
upper
compartment
of
the
still
;
by
which
means
a
partial
con-
densation
will
have been
effected
of
the
grosser
vapours
which
have
arisen
from
the
lower
compartments,
and
the
higher
or
uncondensed
vapour
will
pass
off
through
the
perpendicular
pipe
/
to
the
condensing
apparatus.
A
small
pipe
(/,
with
a
stopcock,
is
inserted
into
the
tube
6,
and
carried
through
the
vessel
of
water,
by
which
a
small
quantity
of
the
vapour
from
the
lower
part
of
the
still
may
be admitted
into
the
glass
vessel
A,
for
the
purpose
of
ascertaining
the
quality
of
the
vapour.
When
the
spirit
is
out
of
the
lower
compartment
of
the
still,
and
the
upper
compartment
reduced
to
the
gravity
intended, the
spent
liquor
below
is
to
be
drawn
off
through
the
cock
i
;
after
which
the
valve
k
may
be
opened,
to
admit
the
liquor
from
the
upper
to
the
lower
part
of
the
still;
and
the
succeeding
charge
is
drawn
from
the
cistern
I,
through
the
pipe
m,
to
the
upper
part
of
the
still.
The
condensing
apparatus
consists
of
two
cisterns,
placed
one
within
the
other;
the
inner
one
I