Section XIX Extension of the Compass and Equalization of Registers
The whole secret of both consists in the proper raising and lowering of the soft palate, and the pillars of the fauces connected with it. This divides into two resonating divisions the breath coming from the source of supply, and forced against the chest, whereby it is put under control, as it escapes vocalized from the larynx. It consists also in the singer’s natural adaptability and skill, in so placing the palate and resonance of the head cavities, or keeping them in readiness for every tone, as the pitch, strength, and duration of the individual tones or series of connected tones, with their propagation form, shall demand.