Duality of Voice

by Emil Sutro

The cover image was created by the transcriber and is placed in the public domain.

Duality of Man's Nature

I.—DUALITY OF VOICE

DUALITY OF VOICE
AN OUTLINE OF ORIGINAL RESEARCH

BY

EMIL SUTRO

AUTHOR OF "THE BASIC LAW OF VOCAL UTTERANCE."

G. P. PUTNAM'S SONS
NEW YORK AND LONDON
The Knickerbocker Press
1899