w 



SMITHSONIAN 



fflSCELUlOUS COLLECTIONS. 



VOL. XXL 





EVERY MAN IS A VAIUABIE MEMDP.U OF POCIETT WHO BY HIS OPSEnVATIONS, HESEARCnES, 

 AND EXrERIMENTS PROCURES KNOWLEDGE lOR MEN." — SMITIISON. 





/I 



#: 



•UJ 



WASHINGTON: 

 PUBLISHED BY THE SMITHSONIAN INSTITUTION. 



1881. 



