39 / 230
CONTINUOUS
DISTILLATION.
39
denser,
for
it
would
be
stopped
in
the
ball
r,
and
through
the
tube
s
run
out
by
t,
while
the
vapours
should
take
their
direction
to
the
condenser.
I
is
a
mechanism
formed
by
a
banded
axis
and
two
wheels
with
teeth
;
it
is
moved
by
one
man,
who
causes
the
pump
k
to
play,
and
turns
the
shaft
u
Uy
to
the
bottom
of
which
two
wings
are
fixed,
for
the
purpose
of
continually
agitating
and
preventing
the
matter
from
settling
at
the
bottom
of
the
condenser.
K
is
a
pump,
which
brings
the
matter
from
the
jack
back
into
the
funnel
hh
oi
the
condenser.
MODE
OF
WORKING
THIS
APPARATUS.
The
still
A
is
filled
with
water,
(the
first
time
the
co-
lumn
and
condenser
are
filled
also
with
water;)
the
water
in
the
still
is
brought
to
ebullition
;
the
steam
passes
through
aa
a
into
the
inferior
part
of
the
column,
ascends
from
case
to
case,
passes
through
the
rectifier
into
the
condenser,
where
it
abandons
its
caloric
in
favour
of
the
water
contained
in
the
latter.
When
this
condensed
water
arrives
at
the
probe
F,
the
pump
k
works
without
interruption.
The
matter
proceeding
out
of
the
pump
having
sent
the
water
out
with
which
the
condenser
has
been
filled,
ar-
rives
in
the
column
through
p
p,
where
it is
met
by
the
steam,
which
causes
it
to
boil
;
it
descends
from
case to
case
in
a
constant
state
of
ebullition,
and,
arrived
into
the
last
case,
it
runs
into
G,
and
leaves
through
m.
'By
open-
ing
cocks
7
and
8
of
the
condenser,
the
lowest
products
of
distillation
are
sent
back
into
the
rectifier;
there
they
are
dephlegmcd,
and
return
at
a
very
high
strength,
which
does
not
vary
during
the
whole
time
of
distillation.
As