226 / 330
226
600
MISCELLANEOUS
VALUABLE
RECEIPTS.
of
potassa,
and
all
is
ready.
Put
in
bottom
of
so
lotion
a
piece
of
zinc
about
2
inches
long,
1
wide,
and
J
in
thickness.
After
cleaning,
imraerse
the
article
to
be
plated
in
the
solution
about
half
a
minute,
letting
it
rest
on
the
zinc.
Wipe
off
with
a
dry
cloth
and
repeat
once.
Polish
wath
buckskin.
Thickness
of
plate
can
be
increased
by
repeating
No.
491.
Gilding
the
Edges
of
Paper,
The
edges
of
the
leaves
of
books
and
letter-paper
are
gilded
while
in
a
horizontal
position
in
the
book-
binder's
press,
by
first
applying
a
composition
formed
of
four
parts
of
Armenian
bole
and
one
of
candied
sugar,
ground
together
with
water
to
a
proper
con-
sistence,
and
laid
on
by
a
brush
with
the
white
of
an
Qgg.
This
coating,
when
nearly
dry,
is
smoothed
by
the
burnisher.
It
is
then
slightly
moistened
by
a
sponge
dipped
in
clean
water
and
squeezed
in
the
hand.
The
gold-leaf
is
now
taken
up
on
a
piece
of
cotton
from
the
leather
cushion'
and
applied
on
the
moistened
surface.
When
dry,
it
is
to
be
burnished,
by
rubbing
the
burnisher
over
it
repeatedly
from
end
to
end,
taking
care
not
to
wound
the
surface
by
the
point.
No.
492.
To
Silver
by
Heat,
Dissolve
I
ounce
pure
silver
in
aqua-fortis,
and
precipitate
it
with
common
salt;
to
which
add
J
pound
sal-ammoniac,
sandever,
and
white
vitriol,
and
^
ounce
sublimate.