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40

THE

COMPLETE

PRACTICAL

DISTILLER.

the

water

which

passes

in

the

state

of

steam

out

of

the

still

A

is

to

be

replaced,

and

as

it

is

indispensable

that

this

water

should

be

very

hot,

it

is

drawn

from

the

worm-

tub

E

through

00

0]

before

it

enters

the

still

it

passes

through

G,

where

the

matter

is

boiling

hot.

Cock

No.

4

regulates

the

quantity

of

water

which

is

to

be

introduced.

When

all

the

matter

has

been

pumped

out,

the

process

is

continued

for

about

a

quarter

of

an

hour,

for

the

pur-

pose

of

exhausting

the

matter

left

in

the

column.

The

fire

is

then

drawn

off

3

cock

No.

1,

fixed

on

the

tube

a

a

a,

is

opened,

as

also

cock

No.

3,

which

is

fixed

to

the

tube

K

on

the

lower

part

of

the

column.

The

next

day

the

ope-

rations

are

recommenced

in

the

same

way.

The

column

and

the

condensers

are

left

filled

with

matter.

There

is

another

system

of

continuous

distillation

which

will

here

be

described

;

it

possesses

the

advantage

that

it

can

be

applied

(the

distilling

column)

to

the

neck

of

the

still.

See

fig.

4,

on

the

opposite

page.

Description

of

the

Apparatus.

—

A,

double

still,

having

a

copper

partition

in

the

middle,

which

divides

it

from

top

to

bottom

)

there

is

a

hole

at

the

lower

part of

the

partition,

so as

to

establish

a

communication

between

the

two

stills.

B,

first

distilling

column.

C,

second

distilling

column.

Each

of

these

columns

contain

an

evaporator

in

the

form

of

a

double

vice

of

Archimedes.

D

is

a

common

capital

or

head

belonging

to

the

first

column.

E,

I

capital

or

condenser,

for

the

purpose

of

makings

strong

spirits.