LETTER  OF  TRANSMITTAL. 
Department  of  the  Interior, 
United  States  Geological  Survey, 
Washington,  D.  6r.,  February  #,  1905. 
Sir:  I  have  the  honor  to  transmit,  for  publication  as  a  bulletin  of 
ie  Survey,  a  manuscript  entitled  "  Contributions  to  Economic  Geol- 
ry,  1904." 
The  report  contains  63  contributions  from  37  members  of  the  Survey 
ho  have  been  engaged  more  or  less  continuously  throughout  the  year 
economic  work,  together  with  brief  statements  by  the  geologists  in 
large  of  the  section  of  metalliferous  ores  and  the  section  of  non- 
etalliferous  economic  minerals,  of  the  extent  and  character  of  the 
;onomic  work  being  carried  on  in  the  Survey. 
Very  respectfully, 
C.  W.  Hayes, 
Geologist  in  Charge  of  Geology. 
Hon.  Charles  D.  Walcott, 
Director  United  States  Geological  Surrey. 
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