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I 





SMITHSONIAN 

 MISCELLANEOUS COLLECTIONS 



VOL. 66 



'EVERY MAN IS A VALUABLE MEMBER OF SOCIETY WHO, BY HIS OBSERVATIONS, RESEARCHI 

 AND EXPERIMENTS, PROCURES KNOWLEDGE FOR MEN"— SMITHSON 



(Publication 2478) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



1917 



