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Modern Magic: A Practical Treatise on the Art of Conjuring
·
Professor Hoffmann
476
Some
drawer-boxes
have
a
different
arrangement
for
holding
back
the
inner
drawer,
consisting
of
a
little
wire
bolt
lying
loosely
in
a
cylindrical
cavity
in
the
hinder
end
of
b,
corresponding
with
a
similar
cavity
in
the
side
of
the
outer
case.
As
long
as
the
drawer-box
is
kept
in
its
normal
position,
this
pin
offers
no
obstacle
to
the
withdrawal
of
b
with
a;
but
if
the
box
be
turned
over
on
the
side
in
which
is
the
bolt,
the
latter
drops
partially
into
the
hole
in
the
outer
case,
thus
bolting
b
to
it,
until,
by
again
turning
over
the
apparatus,
the
bolt
is
made
to
drop
back
again
into
its
original
position.
The
arrangement
is
rather
difficult
to
explain
in
writing,
but
will
become
quite
clear
upon
an
examination
of
Figs.
172
and
173,
both
representing
a
section
of
the
hinder
end
of
the
drawer-box,
the
one
in
its
upright
and
the
one
in
its
turned-over
position.
The
necessary
turning
over
of
the
box
is
plausibly
accounted
for
by
the
performer’s
desire
that
the
audience
shall,
for
greater
fairness,
have
a
full
view
of
the
top
of
the
apparatus.
There
is
an
ingenious
addition
sometimes
found
in
drawer-boxes
of
French
make,
whereby
b
may
be
at
pleasure
bolted
to
a,
and
the
two
may
thus
be
handed
for
examination,
with
little
chance
of
their
secret
being
detected.
The
bolting
and
unbolting
is
effected
by
a
slight
movement
up
or
down
of
the
knob
in
front,
thereby
raising
or
depressing
a
kind
of
hook
of
bent
tin,
working
in
the
thickness
of
the
front
of
a.
Fig.
174
shows
this
hook
in
its
raised
or
unhooked,
and
Fig.
175
in
its
depressed
or
hooked
condition.
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