/bfl^MjU^i, , 



SMITHSONIAN 



MISCELLANEOUS COLLECTIONS 



VOL. 68 



EVERY MAN IS A VALUABl/E MEMBER OF SOCIETY WHO, BY HIS OBSERVATIONS, RESEARCHES, 

 AND EXPERIMENTS, PROCURES KNOWLEDGE FOR MEN" — SMITHSON 



(Publication 2526) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



1918 



