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A Thesis prosented to the Faculty of the Graduate School of Yale
University in Candidacy for the Degree of Doctor of Philosophy

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NEW YORK
HENRY HOLT AND COMPANY

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HARVARD COLLEGE LIBRART

DEPUSITED BY
WASSACHUSETTS STATE LIBRARY

31,1927
TRANFEF210
Erik Hi ENORIAL LLLLL

WEIMAR: PRINTED BY R. WAGNER SOHN.

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