LETTER OF TRANSMITTAL. 
Department of the Interior, 
United States Geological Survey, 
Washington, D. ('., February 20, 1904. 
Sir: I submit herewith the manuscript of a report entitled " Ta~ 
conic Physiography," by T. Nelson Dale, and recommend that it be 
published as a bulletin of the Survey. The report embodies the 
results of long and careful study of the relations between land forms 
and lithologic character and structure of the underlying rocks. 
Very respectfully, C. W. Hayes, 
Geologist in Charge of Geology. 
Hon. Charles D. Walcott, 
Director United States Geological Surrey. 
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