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Modern Magic: A Practical Treatise on the Art of Conjuring
·
Professor Hoffmann
302
The
genuine
coins
cannot
return,
by
reason
of
the
raised
edge
of
b;
but
the
substitute
coins
in
their
turn
slide
out
upon
c,
which
is
then
allowed
to
return
to
its
original
position.
The
necessary
movement,
though
comparatively
tedious
in
description,
is
in
skilful
hands
so
rapid
in
execution
that,
where
coins
of
the
same
kind
are
substituted--e.g.,
half-crowns
for
half-crowns--the
most
acute
spectator
cannot
detect
that
any
change
has
taken
place.
A
most
startling
effect
is
produced
by
substituting
coins
of
a
different
kind,
as
pence
for
half-crowns,
the
coins
appearing
to
be
transformed
by
a
mere
shake
into
a
different
metal.
The
change
involving
a
double
process--viz.,
the
disappearance
of
certain
coins
and
the
appearance
of
others--it
is
obvious
that
the
tray
will
be
equally
available
for
either
process
singly.
Thus
coins
placed
upon
the
tray
may
be
made
to
instantly
vanish,
or,
by
reversing
the
process,
coins
may
be
made
to
appear
where
there
was
nothing
a
moment
previously.
In
like
manner,
a
given
number
of
coins
may
be
increased
to
a
larger,
or
decreased
(in
this
case
really
changed)
to
a
smaller
number.
This
tray
has
not,
like
that
last
described,
any
additional
flat
tube
beneath
the
tray,
but
one
end
of
a
and
b
is
closed
by
a
little
slide,
hidden
beneath
the
edge
of
the
tray,
to
allow
of
the
money
therein
being
extracted
when
necessary.
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