[THE CEREBRAL MECHANISM OF SPEECH AND SONG]

[SPEECH AND RIGHT-HANDEDNESS]

[LOCALISATION OF SPEECH CENTRES IN THE BRAIN]

[THE PRIMARY SITE OF REVIVAL OF WORDS IN SILENT THOUGHT]

[CASE OF DEAFNESS ARISING FROM DESTRUCTION OF THE AUDITORY CENTRES IN THE BRAIN CAUSING LOSS OF SPEECH]

[THE PRIMARY REVIVAL OF SOME SENSATIONS IN THE BRAIN]

[PSYCHIC MECHANISM OF THE VOICE]

[!-- ILL --]

ILLUSTRATIONS

FIG.