Bulletin No. 203. 
Series 6, Miscellaneous, 23 
DEPARTMENT OF THE INTERIOR 
UNITED STATES GEOLOGICAL SURVEY 
CHARLES 1>. WALCOTT, Director 
BIBLIOGRAPHY AND INDEX 
OF 
AMERICAN GEOLOGY, PALEONTOLOGY, PETROLOGY 
AND MINERALOGY 
FOR 
THE YE^R 1901 
BY 
FRED BOTJGIITON WEEKS 
V— -] 
wash iNtrrox 
GOVERNMENT PRINTING <>; 
1 902 
