The cover image was created by the transcriber and is placed in the public domain.
Duality of Man's Nature
I.—DUALITY OF VOICE
DUALITY OFVOICE
AN OUTLINE OF ORIGINALRESEARCH
BY
EMIL SUTRO
AUTHOR OF "THE BASIC LAW OF VOCALUTTERANCE."
G. P. PUTNAM'S SONS
NEW YORK AND LONDON
The Knickerbocker Press
1899
NEW YORK AND LONDON
The Knickerbocker Press
1899
Copyright, 1899BYEMIL SUTRO
Entered at Stationers' Hall, London.
The Knickerbocker Press, New York
"There is nothing in our composition either purelymaterial or purely spiritual."—Montaigne.
CONTENTS
| CHAPTER | PAGE |
|---|---|
| I.—INTRODUCTION | 1 |
| Comments of a Distant Reviewer | 15 |
| Fragments | 22 |
| Basic Law of Vocal Utterance | 37 |
| The Voice of the Œsophagus and its Vocal Cords | 41 |
| II.—THE HUMAN VOICE | 44 |
| Introspection | 50 |
| Making Parts Rigid | 56 |
| Extirpation | 59 |
| Movements of the Tongue | 61 |
| Simple Sounds | 66 |
| Posterior Surfaces | 68 |
| Inspiration—Expiration | 77 |
| Diaphragms | 80 |
| III.—IMPRESSION—EXPRESSION | 83 |
| The Phonograph | 88 |
| Stuttering—Stammering | 92 |
| Cathode of a Vocal Sound | 103 |
| IV.—OUR MOTHER TONGUE | 110 |