SMITHSONIAN 



CONTRIBUTIONS TO KNOWLEDGE 



AM)L. XXXT. 



EVKRY MAN Is A VALfABI-K MEMBER OF SOCIETY WHO, BY HIS OBSERVATIONS, RESEARCHES, AND EXPERIMENTS. ri.OrtREM 



KNOWLEDGE FOR MEN. — SMITB.SOK. 



BL'I^EAU OF 

 L I B K -^ K V 



CITY OF WASHINGTON: 



PUBLISHED BY THE f? W I T H SON I AN INSTITUTION. 



189 5. 



