LETTER  OF  TRANSMITTAL. 
Department  of  the  Interior, 
United  States  Geological  Survey, 
Washington,  D.  (7.,  March  IS,  1901. 
Sir:  I  have  the  honor  to  transmit  herewith  the  manuscript  for  a 
Catalogue  and  Index  of  the  Publications  of  the  United  States  Geolog- 
ical Survey  from  1880  to  1901,  with  the  request  that  it  be  published  as 
one  of  the  numbers  in  the  series  of  Bulletins. 
Very  respectfully,  your  obedient  servant, 
P.  C.  Warman, 
Editor. 
Hon.  Charles  D.  Walcott, 
Director  of  United  States  Geological  Survey. 
