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SMITHSONIAN INSTITUTION——BUREAU OF ETHNOLOGY. 
J. W. POWELL, DIRECTOR. 
ON THE EVOLUTION OF LANGUAGE, 
AS EXHIBITED IN 
THE SPECIALIZATION OF THE GRAMMATIC PROCESSES, THE DIFFERENTIATION 
OF THE PARTS OF SPEECH, AND THE INTEGRATION OF THE 
SENTENCE; FROM A STUDY OF INDIAN LANGUAGES. 
BY 
J. W. POWELL. 
