LETTER OF TRANSMITTAL. 
Department of the Interior, 
United States Geological Survey, 
Washington, D. ('.. July J.\ 1902. 
Sir: I have the honor to transmit herewith the manuscript of a 
Bibliography and Index of North American Geology, Paleontology, 
Petrology, and Mineralogy for the Year 1901, and to request that it 
be published as a Bulletin of the Survey. 
Yours respectfully, 
F. 1). Weeks. 
Hon. Charles D. Walcott, 
Director United States Geological Survey. 
