114 / 330
114
600
MISCELLANEOUS
VALUABLE
RECEIPTS.
wliich,
volume
for
volume,
contains
so
large
a
quan-
tity
of
colouring-
matter.
A
practical
colourman
says
that
it
contains
even
ten
to
one
more
than
any
other
colouring-matter.
It
is,
on
this
account,
much
used
in
house-painting,
and
also
in
colouring
paper-
hangings.
Indigo.
—
Another
blue
colour,
much
used
in
com
mon
painting,
is'one
but
the
best
and
purest
kind
of
this
colour
is
proper
for
oil-painting
:
that
of
an
inferior
quality
is
only
fit
for
distemper,
as
the
oil
renders
it
black
or
green.
Indigo
grinds
fine,
and
bears
a
very
good
body.
Its
natural
colour,
how-
ever,
being
very
dark,
almost
indeed
approaching
to
black,
it
is
seldom
or
never
used
without
a
small
mixture
of
white.
Ultramarine
is
the
richest,
mellowest,
most
beauti-
ful,
and
lasting
of
all
blues
;
but
its
extravagant
price
—
nearly
equal,
when
pure,
to
its
weight
in
gold
prevents
its
being
introduced,
unless
veiy
rarely
indeed,
into
house-painting.
Smalt,
Zajf're,
Azure,
Saxon
Blue,
or
Enamel
Blue.
—
It
is
of a
lovely
azure
hue,
but,
if
not
bought
in
the
form
of
powder,
is
very
difiicult
to
grind,
and
it
can
be
used
only
in
a
peculiar
manner.
Blue
Verditer,
—
This
is
a
beautiful
blue,
obtained
from
the
waste
nitrate
of
copper
of
the
refiners
by
adding
to
it
a quantity
of
chalk
;
but
it
is
only
proper
for
distemper:
it
does
not
admit
of
being
used
w^ith
oil,
unless
a
considerable
mixture
of
white
is
intro-
duced.
Greens,
—
Verdigris.
—
This
is
the
best
simple
green,
and
the
one
most
in
use.
It
has
a
bluish
tint,
but,
when
lightened
by
the
addition
of
a
little
yellow
pink,
it
makes
a
beautiful
grass-green.
It