LETTER OF TRANSMITTAL. 
Department of the Interior, 
United States Geological Survey, 
Washington, D. C, March 9, 1903. 
Sir: I have the honor to transmit, for publication as a bulletin of 
the Survey, a manuscript entitled Contributions to Economic Geology, 
1002. 
The report contains 61 contributions from X'} members of the Survey 
who have been engaged more or less continuously throughout the year 
in economic work, together with a brief statement bj~ the geologists in 
charge of the sect ion of metalliferous ores and the section of non- 
metalliferous economic minerals, of the extent and character of the 
economic work being carried on in the Survey. 
Very respectfully, 
C. W. Hayes, 
Geologist in Charge of Geology. 
Hon. Charles I). Walcott, 
Director United States Geological Surrey. 
