the mind are a unit; they find expression in time, and so call upon the rhythmic elements for an adequate expression. But the intensity of the emotional life makes upon the agents of vocal expression demands which are satisfied through changes of quality, volume, and touch. The trained voice, drilled until it has become the obedient and unconscious servant of the trained mind, is no longer a mere sound sensation, "inarticulate and vague; it is an orchestral symphony, with groups of responsive instruments: here is a group giving the melodic theme; there, others uttering the pulsing life of the universe; and lastly, groups adding rich harmonies, creating noble volume and quality of tone. But they are all under the immediate direction of the symmetrical mind whose great-hearted theme is "Joy to the world!" INDEX TO AUTHORS Letters refer to the exercises as arranged under the various headings: Mel- |