adopted by the stutterer or stammerer and learn where the fault is
and what is the cause of it.

Let us now proceed to do this: In other words, let us ask the
question: "How is speech produced in the normal person not
afflicted with defective utterance?"

Voice is produced by the vocal organs much in the same manner as
sounds are produced on a saxophone or clarinet, by forcing a
current of air through an aperture over which is a reed which
vibrates with the sounds. The low tones produced by the saxophone
or clarinet result from the enlargement of the aperture, while the
higher tones are produced by contracting the opening. Variations
of pitch in the human voice are also effected by elongation and
contraction of the vocal cords with comparative slackness or
tension, as in the violin.

It would be of no value, and, in fact, would only serve to confuse
the layman, to know the duties or functions of the various organs
or parts entering into the production of speech. Suffice it to say
that in the "manufacture" of words, there are concerned the
glottis, the larynx, thorax, diaphragm, lungs, soft palate,
tongue, teeth and lips. In the production of the sounds and the
combination of sounds that we call words, each of these organs of
speech has its own particular duty to perform and the failure of
any one of these organs properly to perform that duty may result
in defective utterance of some form.

BRAIN CONTROL: It must be borne in mind that for any one or all of
the organs of speech to become operative or to manifest any