SMITHSONIAN 



CONTRIBUTIONS TO KNOWLEDGE, 



YOL. XX. 



EVERT MAN 13 A VALUABLE MEMBER OF SOCIETY, WHO, BT HIS OBSERVATIONS, RESEARCHES, AND EXPERIMENTS, PROCURES 



KNOWLEDGE FOR MEN. — SmITHSON. 



CITY OF WASHINGTON: 



PUBLISHED BY THE SMITHSONIAN INSTITUTION. 



MDCCCLXXVT. 



