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80^
THE
COMPLETE
PRACTICAL
DISTILLER.
themselves.
This
advantage
should
be
well
observed,
for
it
belongs
entirely
to
the
system
of
continuous
distil-
lation.
The
glass
tube
e/,
the
same
as
c
d^
serves
to
indicate
the
movement
of
the
liquid
in
the
column.
IV.
The
Wine-warming
Condenser.
—
This
apparatus,
shown
in
Q
i,
like
the
preceding,
has
two
distinctions
:
First,
to
condense
the
vapours
with
which
it
is
supplied,
for
the
purpose
of
transmitting
them
either
to
the
receiver
or
to
the
worm.
Secondly,
to
appropriate
to
the
wine
in-
tended
for
distillation
the
heat
which
the
vapours
lose
by
being
condensed.
It
is
evident
that
these
functions
are
closely
connected.
This
condenser
is
a
copper
cylinder,
into
which
the
wine
arrives
gradually
through
k
l,
to
leave
it
through
D
E.
It
contains
a
vertical
worm,
the
pipes
of
which
all
communicate,
by
their
inferior
parts,
with
the
pipes
hj
and
g
j\
through
the
tubes
1,
2, 3, 4,
5,
6,
7,
8,
9,
10,
11,
12, 13,
14
;
and
the
vapours
arrive
in
this
worm
through
H,
on
leaving
the
rectifier
G
c,
which
they
leave
entirely
condensed,
through
the
fourteen
tubes,
or
through
I
m;
hence
they
proceed
either
to
the
rectifier
or
to
the
cooler.
In
the
execution
of
this
wine-
warming
condenser
conditions
are
to
be
fulfilled
which
are
not
easily
sur-
mounted
;
but
by
proper
care
and
attention
no
fear
need
be
apprehended
—
to
such
a
state
of
perfection
has
the
apparatus
been
brought.
The
following
are
the
difficulties
which
present
them-
Belves
:
—
On
one
side
it
is
necessary,
in
this
system
of
distilla-
tion,
that
the
common
temperature
of
the
condense!
should
not
exceed
that
of
ebullition,
because,
if
this
were
the
case,
the
wine,
which
is
much
poorer
in
alcohol
than