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Modern Magic: A Practical Treatise on the Art of Conjuring
·
Professor Hoffmann
416
There
is
yet
another
form
of
ball-box,
also
frequently
worked
in
pairs,
and
designed
to
simulate
the
apparent
passage
of
a
ball
from
the
one
box
to
the
other.
The
vase
in
this
case
consists
of
two
parts
only,
the
vase
proper
a,
and
the
cover
b,
but
the
latter
is
of
such
a
height
as
to
completely
contain
the
ball,
and
of
such
a
size
internally,
that,
if
the
ball
be
jerked
up
into
the
cover,
it
will
not
again
fall,
unless
a
slight
shake
be
used
to
displace
it.
(See
Fig.
129.)
Each
vase
has
its
own
ball,
and
the
mode
of
use
is
as
follows:--One
of
the
vases
is
prepared
beforehand
by
jerking
up
the
ball
into
the
cover,
which
may
then
be
removed,
showing
the
vase
apparently
empty;
or
both
may
be
first
shown
empty,
and
the
ball
then
introduced
secretly
under
the
cover,
after
the
manner
of
the
cups
and
balls.
The
remaining
vase
and
ball
are
offered
for
inspection,
and
when
they
are
returned,
the
ball
is
placed
within
and
covered
over,
after
which
the
closed
vase
is
placed
upon
the
table;
but
in
the
act
of
doing
this
the
performer
gives
the
apparatus
a
slight
upward
jerk,
thereby
causing
the
ball
therein
to
rise
into
the
cover,
where
it
remains.
The
second
vase
is
once
more
shown
empty;
but
in
replacing
it
on
the
table,
the
performer
puts
it
down
sharply,
thereby
causing
the
ball
to
drop
from
the
cover
into
the
cup.
He
now
orders
the
ball,
which
the
company
have
seen
placed
in
the
first
vase,
to
pass
invisibly
into
the
second;
and
on
again
opening
the
two,
this
transposition
will
appear
to
have
taken
place,
and
by
a
repetition
of
the
process
the
ball
may
be
made
to
travel
backwards
and
forwards
from
one
vase
to
the
other.
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