SMITHSONIAN 



CONTRIBUTIONS TO KNOWLEDGE. 



VOL. XXXII. 



EVERY MAN IS A VALUABLE MEMBER OF SOCIETY WHO, BY HIS OBSERVATIONS, RESEARCHES, AND EXPERIMENTS, PROCURES 

 KNOWLEDGE FOR MEN.— SMITHSOK. 



BUREAU OF 



Aiyiu.RTrag^F-i-t-TKioi rysr<r. 







135 



LIB K A. K, Y 



CITY OF WASHINGTON: 



PUBLISHED BY THE SMITHSONIAN INSTITUTION. 

 1895. 



