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Modern Magic: A Practical Treatise on the Art of Conjuring
·
Professor Hoffmann
212
MECHANICAL
CHANGING
CARDS.--These
are
of
two
or
three
kinds,
but
all
have
the
same
object--viz.,
the
apparent
transformation
of
the
card
to
a
different
one.
In
some
cases
the
change
is
from
a
court
card
of
one
suit
to
the
same
card
of
another
suit--e.g.,
a
king
of
spades
to
a
king
of
hearts,
involving
merely
the
alteration
of
the
pip
in
the
corner.
This
is
effected
by
having
the
card
made
double,
that
portion
of
the
front
card
on
which
the
pip
should
be
being
cut
out.
The
hindmost
card,
which
is
pasted
only
round
the
extreme
edge
to
the
front
one,
is
a
plain
white
card,
but
with
the
appropriate
pip,
say
a
spade,
neatly
painted
in
the
proper
position,
to
allow
of
its
showing
through
the
opening
in
the
front
card,
which
thus
has
the
appearance
of
an
ordinary
king
of
spades.
Between
the
two
cards
is
a
moveable
slip,
worked
by
a
pin
through
a
slip
in
the
back,
on
which
is
painted
a
heart
pip.
By
moving
this
slip,
the
heart
is
in
turn
brought
opposite
the
opening,
covering
the
spade
pip,
so
that
the
card
now
appears
to
be
the
king
of
hearts.
The
card
as
above
described
is
of
the
old
single-headed
pattern,
but
the
same
principle
may
be
applied
to
double-headed
cards.
In
this
case
both
of
the
“pip”
portions
of
the
front
card
are
cut
away
as
in
Fig.
55,
while
on
the
upper
corresponding
portion
of
the
hinder
card
is
painted
(say)
a
spade,
and
on
the
lower
a
heart,
as
in
Fig.
56.
The
moveable
slip
is
of
such
a
shape
and
size
as
to
cover
the
one
or
the
other,
according
as
it
is
drawn
up
or
down;
and
on
the
upper
part
of
this
(see
Fig.
57)
is
painted
a
heart,
and
on
the
lower
a
spade.
When,
therefore,
the
slip
is
pushed
up,
the
heart
pip
on
the
slip
and
the
heart
pip
on
the
hindmost
card
are
shown,
so
that
the
card
appears
to
be
a
king
of
hearts.
When,
on
the
other
hand,
the
slip
is
drawn
down,
the
spade
pip
of
the
hinder
card
is
revealed,
and
at
the
same
time
the
slip
covers
over
the
heart
pip
of
this
latter,
and
exhibits
its
own
spade
pip,
giving
the
card
the
appearance
of
a
king
of
spades.
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