LETTER OF TRANSMITTAL. 
Department of the Interior, 
United States Geological Survey, 
Division of Geology, 
Washington, I). C, May 27, 1897. 
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 189G, and to request that it be 
published as a bulletin of the Survey. 
Very respectfully, 
F. B. Weeks. 
Hod. Charles D. Walcott, 
Director United States Geological /Survey. 
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