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Modern Magic: A Practical Treatise on the Art of Conjuring
·
Professor Hoffmann
473
THE
MAGIC
MILL.--This
is
a
little
Mill
of
the
form
shown
in
Fig.
167,
and
five
or
six
inches
in
height.
It
is
made
of
zinc
or
tin,
and
consists
of
two
portions--the
upper
part
A,
and
the
base
B
(see
Fig.
168),
the
former
sliding
over
the
latter
(as
shown
by
the
dotted
lines
in
Fig.
167),
and
fitting
easily
upon
it.
A
is
hollow
throughout;
a
and
b
b
are
hollow
tubes
open
at
each
end,
a
third
little
tube
c
springing
at
right
angles
from
a.
The
base,
B,
is
a
hollow
chamber,
closed
on
all
sides
save
at
the
openings
d
and
e
e.
This
chamber
is
beforehand
fitted
with
powdered
chalk
or
charcoal;
after
which
A
is
placed
in
position
over
it.
If,
under
these
circumstances,
any
person
blows
smartly
through
the
tube
a,
the
effect
will
vary
according
to
the
position
of
B
within
A.
If
B
be
so
turned
that
the
three
holes
d
and
e
e
correspond
with
the
tubes
a
and
b
b,
the
breath
entering
at
d
will
force
out
the
contents
of
B
through
the
tubes
b
b,
and
powder
the
lips
of
the
person
blowing,
as
in
the
case
of
the
magic
whistle.
But
if,
on
the
contrary,
B
be
turned
ever
so
little
to
the
right
or
left,
the
three
openings
in
B
no
longer
corresponding
with
the
tubes,
the
latter
will
be
closed,
and
the
breath
having
no
other
outlet,
will
be
forced
upwards
through
the
upright
tube
c,
thereby
setting
the
little
vane
f
in
rapid
motion.
The
latter
is
the
condition
in
which
the
apparatus
is
brought
forward
by
the
performer.
Blowing
through
a,
he
sets
the
mill
in
motion,
and
invites
others
to
do
likewise,
in
which,
of
course,
they
succeed
without
difficulty;
but
when
the
turn
of
the
intended
victim
arrives,
the
performer
gives
A
a
slight
twist
round,
in
such
manner
as
to
bring
the
openings
of
B
in
correspondence
with
the
three
tubes,
with
the
result
already
explained.
We
have
omitted
to
mention
that
there
is
on
the
under
surface
of
B
a
little
raised
point,
corresponding
in
position
with
the
opening
d,
so
that
the
performer
is
able
to
tell
instantly
by
feel
whether
B
is
or
is
not
in
the
required
position.
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