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Modern Magic: A Practical Treatise on the Art of Conjuring
·
Professor Hoffmann
601
When
the
performer
desires
to
perform
the
trick,
he
places
the
empty
glass
upon
b,
and
conceals
it
with
a
cover
of
any
kind.
Standing
carelessly
behind
the
table,
and
keeping
the
attention
of
the
audience
occupied
by
any
observations
he
may
deem
most
appropriate
for
that
purpose,
he
takes
hold
with
his
right
hand
of
the
handle
h,
and
turns
it
outward,
thereby
lowering
the
empty
glass
into
d.
As
soon
as
he
feels
that
it
will
sink
no
further,
he
shifts
his
hand
to
the
handle
a,
and
therewith
draws
the
cylinders
back
so
as
to
bring
c
under
b,
and
then,
by
turning
g,
gently
raises
the
full
glass
of
water
up
through
b
to
the
surface
of
the
table.
The
reader
will
now
perceive
the
reason
why,
as
already
mentioned,
the
piston
in
d
is
made
a
little
tight,
so
as
to
require
the
assistance
of
the
handle
to
raise
it
into
its
position.
It
is
necessary
that
this
piston,
when
once
depressed
with
the
object
to
be
changed,
shall
remain
down
while
the
hand
is
shifted
from
handle
h
to
handle
g.
If
it
were
not
made
to
work
somewhat
stiffly,
the
moment
the
handle
h
was
released
the
piston
would
instantly
fly
up
again
with
the
object
upon
it,
thus
neutralizing
what
had
been
already
done.
The
cylinder
c,
which
is
to
produce
the
substitute
object,
is
not
brought
under
b
until
the
hand
of
the
performer
is
already
on
the
handle
belonging
to
it,
and
can
thereby
check
its
upward
ascent
as
may
be
necessary.
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