-SMIITHSONIAN IJSTSTITUTIOlSr, 



UNITED STATES NA^TIONAL MUSEUM. 



-J 



BULLETIN 



OF THE 



UNITED STATES NATIONAL MUSEUM. 



IS^o. 50. 



Paet VI. 



WASHINGTON: 



GOVEKNMENT FEINTING OFFICE. 



f 1914. 



