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SPECIAL

DISTILLATIONS.

181

it is

sufficient

to

infect

100

litres

of

the

best

I

randy.

M.

Aubergier

remarks,

that

the

spirits

that

are

drawn

from

the

various

fruits

owe

their

particular

taste

and

fla-

vour

to

a

volatile

and

oily

principle,

generally

found

in

the

surface

of

each

fruit,

and

that,

by

taking

this

surface

away,

they

would

almost

all

be

alike

;

that

by

thus

de-

priving

apples,

pears,

plums,

apricots,

peaches,

and

even

harlei/j

of

their

envelopes,

spirits

would

be

drawn

from

these

vegetables

almost

entirely

free

from

the

flavour

in-

herent

to

them/'

To

this

M.

Gay-Lussac

adds

a

note

as

follows

:

"

Many

persons

attribute

the

taste

and

flavour

of

lees-

spirit

to

distillation

itself,

during

which

the

lees

stick

to

the

sides

of

the

still,

which

causes

them

to

be

carbonized.

^^One

thing

which

confirms the

influence

of

this

fact

is,

that

when

lees

are

distilled

by

the

new

process

that

is,

by

the

steam

of

water

spirits

of

a

much

better

quality

are

obtained.

However,

it

is

not

less

certain

that

lees-

spirits

contain

a

peculiar

essential

oil,

odorous,

very

acrid,

altering

their

quality

very

much,

and

on

which

M.

Aubergier

has

made

interesting

remarks.

This

oil,

by

its

flavour,

its

acridity,

and

its

property

of

not

staining

paper,

and

of

not

being

converted

into

soap

by

alkalies,

must

be

classed

among

the

number

of

essential

oils

;

but

its

property

of

being

little

soluble

in alcohol,

of

burning

without

smoke,

and

of

being

much

less

volatile

than

the

rest

of

the

essential

oils,

which

I

have

verified

on

the

sample

obtained

by

M.

Aubergier,

prove

that

it

has

some

analogy

with

fat

oils.''

It

may

not

be

amiss

to

say

a

few

words

concerning

the

"

semi-fluid,

semi-solid

wines

of

corn

and

potatoes."

Ever^

]6