80 / 230
80
THE
COMPLETE
PRACTICAL
DISTILLER.
stages
in
the
space
of
thirty
hours; then
it
is
time
to
commit
the
liquid
to
the
still.
If
the
operation
has
been
weJl
conducted,
from
45
to
50
litres
of
good
spirits
at
19^
are
obtained
from
100
kilogrammes
of
grain.
Many
dis-
tillers
are
far
from producing
so
much, and
there
are
even
some
who
do
not
draw
more
than
from
30
to
35
litres.
The
exiguity
of
this
produce
may
be
the
result
of
several
causes
;
but
one
of
the
most
influential
is
the
proportion
of
water
used
;
that
is
to say,
that
instead
of
using
11
hectolitres
of
water
for
every
100
kilogrammes
of
grain,
they
only
use
6.
In
a
continuous
work
the
spent-wash
left
in
the
still
should
be
deposited
in
vats
or
cisterns
constructed
for
the
purpose
;
there
the
solid
substances
will
fall
to
the
bottom,
and
the
liquid
will
remain
upper-
most.
This
liquid
may
be
successfully
used
in
the
subsequent
operations
to
dilute
the
grain
after
it
has
been
mashed.
In
this
practice
is
found
the
advantage
of
bringing
again
to
fermentation
a
liquid
containing
some
fermentable
sub-
stances
which
have
escaped
decomposition.
This
may
be
followed
up
for
several
successive opera-
tions
—
that
is,
three,
four,
and
even
five;
and
the
grain
produces
thus
as
much
as
60
litres
of
spirit
of
19°
per
metrical
quintal,
produce
very
considerable,
and
which
could
not
be
obtained
by
any
other
means.
The
use
of
spent-wash
is
suspended
when,
after
several
successive
operations,
it
is
become
so
sour
that
instead
of
offering
proper
aliments
to
the
fermentation,
its
acidity
would
be
obnoxious
to
it.
If
a
smaller
proportion
of
water
was
used,
the
same
march
could
not
be
followed,
—
at
least
not
r.o
the
same
extent,
—
because
then
the
fermentation
would