"They are not the _cause_ of the perfect tone, but are simply acted upon by the cause." After having become acquainted with the cause of these motions, and having learned to control it in the interest of pure and perfect tone, the movements of the larynx and the replica will become of value to us as "indicators" of the correct or incorrect exercise of the cause which they reflect. In "recording" the original movements they will show us what is right or wrong in the latter, and will thus offer us an opportunity for correcting them. Up to the present they have been simply barometers, which, no matter how closely we may observe them, offer us no opportunity for changing "the state of the weather" which they indicate. After thoroughly comprehending the _causes_, however, which move them, we may shape the course of the latter in conformity with our will. Or, vice versa, we may shape our will, which, after all, is the _first cause_, so as to correct that which they indicate to be wrong in our tone production. Now, what is that which the will acts upon, and thus becomes the original source, the first cause, so to say, of tone production? My answer will be a surprise, for, as far as I know, no one has ever as much as thought, even, of looking in this direction for the seat of the voice. The original source of tone production has its location in _various vessels of the viscera_: in the lungs, the kidneys, and the bladder, for the most part, though many other vessels, if not all, participate, and are more or less involved in its production. Besides these vessels, the heart and the solar plexus, as central organs of the vascular and nervous systems, together with the brain as the central seat of thought and the will, perform parts of the highest importance in tone production and vocal utterance. In the lungs, the bladder, and the kidneys, together with their coadjutors, the bronchi and ureters, _the tone originates_. Here we can control, and unconsciously do control, it. I shall adduce indubitable proof as to the correctness of these assertions. More than that, I shall _locate_ sounds in these various vessels. As a tone proceeds from a given string located in a given part of a musical instrument, and cannot proceed from or be produced on any other string, a given tone of the human voice proceeds from a given vessel, and cannot proceed from or be produced in any other vessel.