SMITHSONIAN MISCELLANEOUS COLLECTIONS, 



252 



TEE 



MOLLUSKS 



OF 



WESTERN NORTH AMERICA. 



EARTH 



BY 

 PHILIP P. CARPENTER, B.A., PH.D. 



EMBRACING THE SECOND REPORT MADE TO THE BRITISH ASSOCIATION 



ON THIS SUBJECT, WITH OTHER PAPERS ; REPRINTED BY 



PERMISSION, WITH A GENERAL INDEX. 



WASHINGTON: 

 SMITHSONIAN INSTITUTION 



DECEMBER, 1872. 



SgSssw OF cALim 



fitLf! 



DWTni nriV 



JAN 24 1952 

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