/?.3' f m 
Bulletin No. 203 
Series G, Miscellaneous, 23 
DEPARTMENT OF THE INTERIOR 
UNITED STATES GEOLOGICAL SURVEY 
CHARLES D. WALCOTT, Director 
BIBLIOGRAPHY AND INDEX 
OF 
NORTH AMERICAN GEOLOGY, PALEONTOLOGY, PETROLOGY 
AND MINE 
FOR 
THE Y E -A. H 1901 
.BY 
FRED BGUGIJTOX WEEKS 
flH@BI 
m 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1 J) 2 
