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188
The Speech of Monkeys
·
R. L. Garner
141
Having
thus
augmented
the
quantity
of
sound,
by
increasing
alike
the
sound
unit
and
interval,
it
can
be
recorded
on
another
cylinder
and
multiplied
again
as
long
as
the
vibrations
can
produce
sound.
From
the
constant
relation
of
parts
and
their
uniform
augmentations
under
this
treatment,
it
has
suggested
to
my
mind
the
idea
that
all
sounds
have
definite
geometrical
outlines,
and
as
we
change
the
magnitude
without
changing
the
form
of
the
sound,
I
shall
describe
this
constancy
of
form
by
the
term
contour.
In
a
few
instances
I
have
been
able,
by
reducing
the
record
of
certain
sounds
from
a
high
pitch
to
a
lower
one,
to
imitate
the
sound
thus
reduced
with
my
own
vocal
organs,
then
by
restoring
this
record
of
my
voice
to
its
normal
speed
have
obtained
almost
a
perfect
imitation
of
the
sound.
This
effect,
however,
does
not
always
follow,
and
in
many
instances
my
best
imitations
have
not
developed
the
original
at
all.
But
this
presents
a
new
problem
in
acoustics.
I
must
here
take
occasion
to
say
that
the
difference
of
pitch,
quality,
&c.,
in
sounds
does
not
appear
to
me
to
depend
alone
upon
the
length
of
the
sound
unit,
but
there
seems
to
be
a
difference
of
ultimate
form
and
mode
of
propagation
which
have
much
to
do
with
the
contour
of
the
developed
sound.
[Sidenote:
THE
SOUND
FORCE]
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