ency of the lungs, the larynx, and the mouth. The
lungs supply air to the larynx, which modifies the stream into whisper
or voice; and this air is then moulded by the plastic oral organs into
syllables which singly or in accentual combinations constitute words.

As explained in the Chapter on Causes, all of the physical organs which
have to do with the production of speech and all of the brain centers
whose duty it is to control the actions of these various organs, must
operate in harmony, or, in other words, must coordinate, if we are to
have perfect speech. Co-ordination implies perfect mental control of
physical actions. And this in turn means perfect obedience of the
physical organs of speech to the brain messages that are received.

The cure of stammering and stuttering requires a great deal of care
based, of course, upon the correct scientific knowledge in the first
place.

In attempting to cure stammering, there has been too much teaching by
rigid rules and not enough teaching by principles. There are very few
hard-and-fast rules that can be followed with success by every
stutterer or stammerer. No set of rules can be laid down as a standard
for every one to follow, for no two persons stammer exactly alike any
more than two persons look exactly alike.

The only safe rule of all the rules is that which says, "Cleave closely
to the principles, let the rules fall where they may." The only
successful method is that which, being first based upon the right
principle, is followed out with intelligence by the stammerer and
administered with wisdom by the instructor to fit the needs and
requirements of the individual case.

METHODS NECESSARILY THREE-FOLD: The cure of stammering and stuttering
can be wrought only by a method that is three-fold-that attacks all of
the un-normal conditions of the stammerer simultaneously and eradicates
them in unison.

It would be of little avail, for instance, to build up perfect breath
control, and leave the stammerer in a mental state where he was
continually harassed by a fear of failure, by a continual
self-consciousness and irritated by a deep-seated nervousness.

And it would be of just as little use to try to remove that
self-consciousness, fear of failure and nervousness without removing
the cause of the stammering.

In other words, when the successful method of curing stammering is
spoken of as being threefold in purpose, it is meant that this method
must build up the phy