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ViH HARRIMAN ALASKA EXPEDITION 



1Q | WITH COOPERATION OF WASHINGTON ACADEMY OF SCIENCES 



W LU 



ALASKA 



VOLUME XIII 



LAND AND FRESH WATER 

 MOLLUSKS 



BY WILLIAM H. DALL 



HYDROIDS 



BY C. C. NUTTING 



NEW YORK 

 DOUBLEDAY, PAGE & COMPANY 



1905 



