Transcriber’s Note.

The original print of this book uses Helmholtz pitch notation, where middle-C is represented by a lowercase c with one over-line, the C above with two over-lines, etc. For accessibility, I have used the alternative convention of using numbers after the note name, thus:

A few corrections have been made to spelling and punctuation.
A list of these amendments can be found at the end of the text.

More detailed versions of the illustrations of the larynx in Chapter II are available by following the link on each image.

The cover design accompanying this eBook was created by the transcriber, who waives all copyright to the work.