stimulus and its results—The one-celled animal—Various "systems"necessary—Complexity of structure and function—Harmony through the nervous system—The rule of nervous centres—Means by which they are influenced, and by which they influence—Reflex action—Muscular mechanisms and neuro-muscular mechanisms—Work of the singer and speaker largely reflex in character—Summary 34

CHAPTER III.

BREATHING CONSIDERED THEORETICALLY AND PRACTICALLY.

Breathing the great essential—Misconceptions—Purpose of breathing as a vital process—The respiratory organs—Their nature—Relations of the lungs to the chest-wall—Expansion of the chest—Its diameters—The muscles of respiration—Personal observation—The diaphragm—Varying quantities of air breathed—Breathing when properly carried out by the singer or speaker is healthful 44

CHAPTER IV.

BREATHING FURTHER CONSIDERED THEORETICALLY AND PRACTICALLY.

Relations of the nervous system to breathing—The respiratory centre—Reflex action in breathing—Methods of preventing nervousness—Tones produced by the outgoing breath—Waste of breath—The happy combination for good singing or speaking 57

CHAPTER V.

BREATHING WITH SPECIAL REGARD TO PRACTICAL CONSIDERATIONS.

The well-developed chest—The voice-user a kind of athlete—The tremolo—Exercises recommended for the development of the chest—Forms of dress that hamper breathing—Weighing and measuring, re-measurement, etc.—Specific directions for methods to develop the chest—Warnings—Additional exercises—Breathing through the nose and through the mouth—Exercises for the development of the diaphragm and abdominal muscles—Relation of the diaphragm to the staccato effect—Forms of general exercise for the voice-user—Summary 62

CHAPTER VI.

THE SPECIAL VOICE-PRODUCING MECHANISM, THE LARYNX.

Not the only voice-producing apparatus—Specific structures of the larynx in use when the subject phonates—Muscles and their attachments—The cartilages of the larynx—The lining mucous membrane—Changes in it when one has a "cold"—The vocal bands—Functions of the epiglottis—The "middle line" and relative position of parts—Adam's apple—Ventricle of the larynx—The importance of the arytenoid cartilages—Muscles of the larynx in detail—Sphincter action—Straining—Position of the larynx—Practical considerations—Dissection of a "pluck" and especially of the larynx—Hygiene—How disorder of one part may affect another—Summary 74

CHAPTER VII.

SOUND—THE LARYNGOSCOPE—THE LARYNX RECONSIDERED.

Some study of physics desirable—Sound and vibrations—The sounding body—Experiments to illustrate the principles of sound—Qualities of sound—Animals and perception of sound—The range of hearing in man—The larynx as a musical instrument—Experiments of Johannes Müller—Discovery of the laryngoscope by Garcia—Description of the instrument—Method of using the laryngoscope—The difficulties—Auto-laryngoscopy—The importance of both laryngoscopy and auto-laryngoscopy—Change in size of the larynx due to use—Delicate changes in the laryngeal mechanism—Changes in the larynx during adolescence—Warnings—The "breaking" of the voice—Analogies with fatigue, etc.—When should singing be begun?—Singing with others—Choral singing 97

CHAPTER VIII.

FURTHER CONSIDERATION OF BREATHING, LARYNGEAL ADJUSTMENT, ETC.

Various kinds of breathing, as "abdominal," "clavicular," etc., discussed—Control of the whole of the breathing mechanism urged—Correct breathing as a habit—Breathing in the most vigorous speaking and singing—Different views expressed by a diagram—Economy of energy in art—Reserve energy in breathing—"Pumping"—Coup de glotte—"Attack"—Breath-adjustment—Quality of sound the prime consideration in tone-production—Tremolo and other faults—Tests of good breathing—Mouth-breathing—Exercises—Singing of a single tone—Its relation to scale-singing—Summary and review 118

CHAPTER IX.

THE RESONANCE-CHAMBERS.

Vocal bands and resonance-chambers compared—Improvised mechanism to illustrate resonance—Musical instruments as resonance-bodies—A vowel in relation to the resonance-chambers—Description of the resonance-chambers—How the quality of tones may be made to vary—New views as to the sounding-chambers—Summary 140

CHAPTER X.

THE REGISTERS OF THE SINGING VOICE.

A controverted subject—Definitions of a register—Qualifications for dealing with this subject—Madame Seiler—Tabular statement of her views—Garcia's and Behnke's divisions of registers—Sir Morell Mackenzie's views in detail—The author's earlier investigations—Madame Marchesi's views and practice 151

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