117 / 330
600
MISCELLANEOUS
VALUABLE
RECEIPTS.
117
Oil
of
Lavender.
—
Its
property
of
drying
more
equally
and
gradually
than
perhaps
any
other
oil
renders
it
also
of
service
to
the
varnisher.
It
is
also
used
by
enamellers,
to
whom
it
is
very
valuable.
Oil
of
Poppies
is,
that
of
being
perfectly
colourless.
The
only
objection
is
of
being
insufi'erably
tedious
in
drying.
Nut
and
Linseed
Oils,
—
Both
in
very
general
use,
and
rank
among
the
fat-oils.
Their
fatness,
indeed,
is
so great,
that
it
is
mostly
found
necessary,
before
employing
them
in
colouring,
to
give
them
a
drying
quality,
which
may
be
done
in
the
following
man-
ner:
Take
1
pound
white
vitriol
and
4
pounds
litharge,
and
let
them
be
reduced
to
as
fine
a
powder
as
pos-
sible
;
then
mix them
with
1
gallon
nut
or
linseed
oil,
and
place
the
mixture
over
a
fire
just
brisk
enough
to
keep
the
oil
slightly
boiling.
Let
it
con-
tinue
to
boil
till
the
oil
entirely
ceases
to
throw
up
any
scum.
Then
take
the
vessel
oft*
the
fire,
and
let
it
stand
in
a
cool
place
for
about
three
hours,
and
a
sediment,
which
contains
the
fattening
part
of
the
oil,
will
be
formed
at
the
bottom.
Pour
oflf
the
oil
which
is
above
(being
careful
not
to
let
any
of the
sediment
mix
with
it)
into
wide-mouthed
bottles.
Let
it
remain
a
suflicient
time
to
clear
itself
per-
fectly
before
it
is
used,
and
you
will
find
it
possessed
of
the
proper
drying
quality.
Oil
of
Turpentine
is
more
used than
any
of
the
pre-
ceding
oils
:
the
varnisher,
indeed,
scarcely
employs
any
other.
Fat-oils
are
oftentimes
mixed
with
oil
of
turpentine,
as
well
as
other
volatile
oils.
Drying
oils,
which
are
composed
of
particular
substances
mixed
with
some
of the
oils
before
mentioned,
are