DUALITY OF VOICE AN OUTLINE OF ORIGINAL RESEARCH
Reading edition
BY
EMIL SUTRO
AUTHOR OF "THE BASIC LAW OF VOCAL UTTERANCE."
G. P. PUTNAM'S SONS NEW YORK AND LONDON The Knickerbocker Press 1899
Copyright, 1899 BY EMIL SUTRO
Entered at Stationers' Hall, London.
The Knickerbocker Press, New York
"There is nothing in our composition either purely material or purely spiritual."—Montaigne.
