V, 1^ '''^^' -Ln-sfi-hJ-h'o'n 



cms^ M I T H 8 N I A N 



CONTRIBUTIONS TO KNOWLEDGE, 



YOL. XIX 



ETERV MAN 13 A VALtJABLF. MEMBEK OF SOCIETY, WHO, BY HIS OBSERVATIONS, RESEABOHES, AND EXPERIMENTS, FBOCVRF.S 



KNOWLEDGE FOB MEN. — SmITHSON. 



CITY OF WASHINGTON: 

 PUBLISnED BY THE SMITHSONIAN INSTITUTION. 



MDCCCLXXIV. 



