PREFACE. 



I desire here to express my gratitude to The 

 New Review. The North American Review \ The 

 Cosmopolitan, The Forum, and many of the lead- 

 ing journals of America, for the use of their 

 valuable and popular pages through which my 

 work has been given to the public. To the 

 press, both foreign and American, I gladly pay 

 my tribute of thanks for the liberal discussion, 

 candid criticism, and kind consideration which 

 they have bestowed upon my efforts to solve the 

 great problem of speech. 



In contributing to science this mite, I do not 

 mean to intimate that my task has been com- 

 pleted, for I am aware that I have only begun 

 to explore the field through which we may hope 

 to pass beyond the confines of our own realm, 

 and invade the lower spheres of life. 



This volume is intended as a record of my 

 w T ork and a voluntary report of my progress, to 



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