480 
INDEX    TO    NORTH    AMERICAN    GEOLOGY 
Economic  geology — Continued. 
General — Continued. 
Contributions  to  economic  geology,  Em- 
mons, Hayes,  1-3. 
Contributions      to     economic      geology, 
1902,  Hayes  (C.  W.),  9. 
Contributions     to     economic     geology, 
1903,  Hayes   (C.  W.),  16. 
Contributions      to     economic     geology, 
1904,  Hayes   (C.  W.),  18. 
Copper   ore   and   garnet   in   association, 
Blake  (W.  P.),  16. 
Copper  production  of  the  United  States, 
Weed,  36. 
Criticism  of  Dr.  Jenney's  paper  on  the 
mineral  crest,  Smith  (G.  CO.  .">. 
Cross-vein     ore-shoots     and     fractures, 
Weed,  22. 
Debris  fans  of  the  arid  region,  Hilgard, 
3. 
Deposition    of   copper    by    solutions    of 
ferrous  salts.  Biddle,  1. 
Deposition    of   ores    in    limestone,    Jen- 
ney,  4. 
Deposition    of    ores    from    an     igneous 
magma,  Stevenson   (R.),  1-3. 
Diamondiferous  deposits  in  the  1'nited 
States,  Hobbs,  4. 
Differentiation  of  igneous  magmas  and 
the  formation  of  ores,  Kemp,  22. 
Differentiation     of     igneous     magmas, 
Stevens    (B.),   3. 
Diffusion  of  petroleum  through  fuller's 
earth,  Day  (D.  T.  i.  2. 
Dilatation  fissures  and  their  contained 
ores,  Weed,  31. 
Distribuciun  de  la  riqueza  en  los  cria- 
deros    metaliferos    primarios    epigen- 
eticos,   Yillarello.   8. 
Distribution    of   copper    in    the    United 
Slates.   Weed.   30. 
Distribution  of  platinum    metals,    Dick 
son.   ."». 
Economic  geology  of  the  United  States. 
Ries.    15. 
Economic  value  of  hot  springs,   Weed. 
38. 
Enrichment    in   fissure   veins,    Hill    (R, 
T.),  17. 
Enrichment  in  fissure  veins.  Spurr,  .'><». 
Enrichment  in  veins,  Church,  3. 
Enrichment   of   gold    and    silver    veins, 
Weed,  1. 
Exploration  for  gold  in  central  States. 
Hall  (C.  W.i.  1. 
Faults  in  metal  mines,  Lakes,  33. 
Field  operations  of  the  Bureau  of  Soils. 
Whitney,  2-6. 
Fire   clays  of   Coal    Measures,    Hopkins 
(T.  C),  5. 
Formation  and  geology  of  salt  deposits, 
Jones   (F.  O.),  1. 
Formation    of   bonanzas    in    upper    por- 
tions of  gold  veins,  Rickard   (T.  A.), 
3. 
Formation  of  lead  and  zinc  deposits  of 
Mississippi  Valley,  Keyes,  16,  20. 
Economic  geology — Continued. 
General — Continued. 
Formation  of  veins,  Kemp,  28. 
Genesis  and  character  of  ore  deposits, 
Storms,  2. 
Genesis    of    Lake    Superior    iron    ores, 
Leith,  15. 
Genesis  of  limonite  ores,  Garrison,   1. 
Genesis  of  ore  deposits,  Alderson,  1. 
Genesis  of  ore  deposits,  Boehmer,  1. 
Genesis  of  ore  deposits,  Tays,  1. 
Genetic    classification    of    ore   deposits, 
Emmons   (S.  F.),  14. 
Genetic    classification    of   ore   deposits, 
Kemp.  25. 
Genetic    classification    of   ore   deposits, 
Ransome,  9. 
Genetic    classification    of    ore    deposits, 
Rickard  (T.  A.),  13. 
Genetic    classification    of   ore   deposits, 
Spurr,  15. 
Genetic    classification    of    ore    deposits, 
Van  Ilise,  11. 
Geogenesis  and  its  bearings  on  economic 
geology.  Frazer,  9. 
Geographic  distribution  of  metalliferous 
ores   within  the   United   States,   Kan 
some,  12. 
Geologic    deposition    of    hydrocarbons, 
Adams  (G.  I.),  10. 
Geologic    deposition    of    hydrocarbons, 
Day  <1>.  T.i.  :;. 
Geological   relations  and  distribution  of 
platinum      and      associated      metals, 
Kemp,  1  1. 
Geological     survey     and     the     western 
miner,  Rickard   (T.  A.),  5. 
Geological    work    in    Lake    Superior    re- 
gion, Van  Ilise.  ".). 
Geology   and  water  resources  of  Snake 
River  Plains,  Russell,  5. 
Geology   applied  to  mining,   Moore    (C. 
J.).  3. 
Geology  applied  to  mining,  Spurr,  23. 
Geology  of  Idaho  and  Oregon,  Russell, 
8. 
Geology  of  ore  deposits,  Van  Hise,  :!. 
Geology  of  western  ore  deposits,  Lakes, 
104. 
Geology,    technology,    and    statistics    of 
gypsum,  Adams  (G.  I.),  14. 
Gold  and  its  associations,  Merrill,  15. 
Gold  deposition  by  drainage,  Bradford, 
1. 
Gold  mining  in  southern  Appalachians, 
Pratt,  6. 
Gold     production     of     North     America, 
Lindgren,  6,  14. 
Graphite,  Bateman,  1. 
Graphite  and  garnet,  Ilcpkins   (T.  C), 
::. 
High  plains  and  their  utilization,  John- 
son  (W.  D. ),  1. 
How   copper    is    produced,    Bell    (Rals- 
ton), 1. 
