Rigidity, 57, 59, 176, 208 Roentgen, Professor, 105 Rush, Dr., 48 Saxon words, 168 School of singing, 187 Science of the voice, 210 Sight, 183 Simple sounds, 66, 68, 88, 106 Singers, 210 Singing, 57, 158 Soft palate, 129 Soul, 184 Speech and song, 158 Spirit, 54, 211, 220 Spirits, 44 Spiritual cell, 148 Stammering, 97 Stuttering, 97 Surd, 89 Teachers, 13, 218, 219 Teeth, 132 Teutonic race, 206 Thorax, 174, 198, 208 Thought, 192 Timbre, 195 Tongue, 61, 101 Trachea, 198, 208 Trochaic measure, 165 Tuning, 157 Ureters, 47 Ventriloquism, 73 Virchow, Professor, 21 Viscera, 46 Vivisection, 51 Vocal science, 220 Vocal sounds, 67, 89 Voice of the œsophagus, 1; falling, 175; rising, 175; whispering, 191 Von Buelow, 193 _Werner's Magazine_, 6, 7, 196, 212, 213 Will, 179, 184 Transcriber's Notes: Simple spelling, grammar, and typographical errors were silently corrected. Anachronistic and non-standard spellings retained as printed. Italics markup is enclosed in _underscores_. Bold and underlined markup is enclosed in =equals=. End of the Project Gutenberg EBook of Duality of Voice, by Emil Sutro