GEOLOGICAL  SURVEY  PUBLICATIONS  ON   GOLD  AND  SILVER. 
The  following  list  includes  the  more  important  publications  by  the 
United  States  Geological  Survey  on  precious  metals  and  mining  dis- 
tricts. Certain  mining  camps,  while  principally  copper  producers, 
also  produce  smaller  amounts  of  gold  and  silver.  Publications  on 
such  districts  will  be  found  in  the  bibliography  for  copper  on  page 
200.  For  a  list  of  the  geologic  folios  in  which  gold  and  silver  deposits 
are  mapped  and  described,  reference  should  be  made  to  the  table  on 
pages  13  to  16  of  the  present  bulletin: 
Becker,  G.  F.  Geology  of  the  Comstock  lode  and  the  Washoe  district ;  with  atlas. 
Monograph  III.     422  pp.     1882. 
Gold  fields  of  the  southern  Appalachians.     In  Sixteenth  Ann.  Rept.,  pt.  3, 
pp.  251-331.     1895. 
Witwatersrand  banket,  with  notes  on  other  gold-bearing  pudding  stones. 
In  Eighteenth  Ann.  Rept.,  pt.  5,  pp.  153-184.     1897. 
Reconnaissance  of  the  gold  fields  of  southern  Alaska,  with  some  notes  on 
the  general  geology.     In  Eighteenth  Ann.  Rept.,  pt.  3,  pp.  1-86,  maps.     1897. 
Brief  memorandum  on  the  geology  of  the  Philippine  Islands.  In  Twen- 
tieth Ann.  Rept.,  pt.  2,  pp.  3-7.     1900. 
Boutwell,  J.  M.  Progress  report  on  Park  City  mining  district,  Utah.  In  Bulle- 
tin No.  213,  pp.  31-40.     1903. 
Brooks,  A.  H.  Reconnaissance  in  the  Tanana  and  White  river  basins,  Alaska,  in 
1898.     In  Twentieth  Ann.  Rept,,  pt.  7,  pp.  429-494.     1900. 
Reconnaissance  from  Pyramid  Harbor  to  Eagle  City,  Alaska.  In  Twenty- 
first  Ann.  Rept.,  pt.  2,  pp.  331-391.     1901. 
Preliminary  report  on  the  Ketchikan  mining  district,  Alaska.  Profes- 
sional Paper  No.  1.     120  pp.     1902. 
Placer  gold  mining  in  Alaska  in  1902.     In  Bulletin  No.  213,  pp.  41-48. 
1903. 
Brooks,  A.  H.,  Richardson,  G.  B.,  and  Collier,  A.  J.  Reconnaissance  of  the 
Cape  Nome  and  adjacent  gold  fields  of  Seward  Peninsula,  Alaska,  in  1900.  In  recon- 
naissances in  the  Cape  Nome  and  Norton  Bay  regions,  Alaska,  in  1900;  a  royal  octavo 
pamphlet  published  in  1901  by  order  of  Congress,  pp.  1-184. 
Collier,  A.  J.  A  reconnaissance  of  the  northwestern  portion  of  Seward  Peninsula, 
Alaska.     Professional  Paper  No.  2.     68  pp.     1902. 
The  Glenn  Creek  gold  mining  district,  Alaska.     In  Bulletin  No.  213,  pp. 
45-56.     1903. 
Cross,  Whitman.  General  geology  of  the  Cripple  Creek  district,  Colorado,  [n 
Sixteenth  Ann.  Rept.,  pt.  2,  pp.  13-109.     1895. 
Geology  of  Silver  Cliff  and  the  Rosita  Hills,  Colorado.     In  Seventeenth 
Ann.  Rept.,  pt.  2,  pp.  269-403.     1896. 
Cross,  Whitman,  and  Spencer,  A.  C.  Geology  of  the  Rico  Mountains,  Colorado. 
In  Twenty-first  Ann.  Rept,  pt.  2,  pp.  15-165.     1900. 
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