A Treatise on Physiology and Hygiene For Educational Institutions and General Readers
CHAPTER XI.
THE VOICE 227
_Voice and Speech--The Larynx, or the Organ of the Voice--The Vocal Cords--The Laryngoscope--The Production of the Voice--The Use of the Tongue--The different Varieties of Voice--The Change of Voice--Its Compass--Purity of Tone--Ventriloquy._
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