,ibrary, Bureau of Ethnology 

 YOL. XXXIII. 



JANUARY, 1912. 



Established by BENJAMIN SILLIMAN in 1818, 



THE 



AMERICAN 



JOURNAL OF SCIENCE 



Editor: EDWARD S. DANA 



ASSOCIATE EDITOES 



Professors GEOKGE L. GOODALE, JOHN TEOWBKIDGE, 

 W. G. FARLOW and WM. M. DAVIS, op Cambridge, 



Professors ADDISON E. VERRILL, HORACE L. WELLS, 

 L. Y. PIRSSON and H. E. GREGORY, of New Haven, 



Professor HENRY S. WILLIAMS, of Ithaca, 

 Professor JOSEPH S. AMES, of Baltimore, 

 Mr. J. S. DILLER, of Washington. 



FOURTH SERIES 



YOL. XXXIII— [WHOLE NUMBER, CLXXXIIL] 



No. 193— JANUARY 



— ( Dh 



<M« 



NEW HAVEN, CONNECTICUT. 



1912. 



THE TUTTLE, MOREHOUSE & TAYLOR CO., PRINTERS, 123 TEMPLE STREET. 



Published monthly. Six dollars per year, in advance. $6.40 to countries in the 

 Postal Union ; $6.25 to Canada. Remittances should be made either by money orders, 

 registered letters, or bank checks (preferably on New York banks). 



