222  BIBLIOGRAPHY    OF    NORTH    AMERICAN    GEOLOGY 
Lindgren  (Waldemar)— Continued. 
19.  Metallic  sulphides  from  Steamboat  Springs,  Nevada, 
Abstract:  Science,  new  ser.,  vol.  17.  p.  792,  1903. 
20.  Gypsum  deposits  in  Oregon. 
U.  S.  Geol.  Surv.,  Bull.  no.  223,  p.  111.  1904. 
Describes  character,  occurrence,  economic  development,  and  geologic  relations  of  gypsum 
deposits  in  eastern  Oregon. 
21.  A  geological  reconnaissance  across  the  Bitterroot  Range  and  Clearwater  Moun- 
tains in  Montana  and  Idaho. 
U.  S.  Geol.  Surv.,  Professional  Paper  no.  27,  123  pp.,  15  pis.,  <s  figs.,  1:01. 
Describes  topography  and  drainage,  character,  occurrence,  and  geologic  relations  of  igneous 
and  sedimentary  rocks  of  Quaternary,  Tertiary,  and  pre-Tertiary  age.  the  geologic  structure 
and  history  of  the  area,  the  character  and  occurrence  of  gold,  silver,  copper,  and  lead  ore 
deposits,  and  the  mining  developments. 
22.  The  genesis  of  the  copper  deposits  of  Clifton-Morenci,  Arizona. 
Am.  Inst.  Mg.  Engrs.,  Trans.,  vol.  35,  pp.  511-550,  1905.     Abstract:  Mg.   Rep.,  vol.  50,  p.  617 
1904;  Mg.  &  Sci.  Press,  vol.  89,  p.  438,  1904. 
Describes  the  general  geology,  and  the  character  and  occurrence  of  copper-ore  deposits,  and 
discusses  their  origin. 
23.  Chemistry  of  copper  deposits. 
Eng.  &  Mg.  .lour.,  vol.  79,  p.  L89,  L905. 
24.  The  occurrence  of  stibnite  at  Steamboat  Springs,  Nevada. 
Am.  Inst.  Mg.  Engrs.,  Bi-mo.  Bull.,  no.  2,  pp.  275-278,  L905. 
25.  The  production  of  gold  in  the  United  States  in  1  V>04. 
I'.  S.  Geol.  Surv.,  Bull.  no.  260,  pp.  32-38,  L905. 
26.  The  production  of  silver  in  the  United  States  in  1904. 
U.  S.  Geol.  Surv.,  Bull.  no.  260,  pp.  39-44,  L905. 
27.  Ore  deposition  and  deep  mining. 
Econ.  Geol..  vol.  L,  pp.  34  46,  1905. 
Discusses  the  occurrence  of  various  kinds  of  ore  deposits,  and  the  relations  of  depth  to  the 
richness  of  the  deposits. 
28.  Clifton  folio,  Arizona. 
U.  S.  Geol.  Surv.,  Geol.  Atlas  of  U.  S.,  folio  no.  129,  1905, 
Describes  the  geography  and  topography,  the  geologic  structure  and  history  of  the  area,  the 
occurrence,  character,  and  relations  of  pre-Cambrian,  Cambrian,  Ordovician,  Devonian, 
Carboniferous,  Cretaceous,  and  Quaternary  formations  and  intrusive  rocks,  and  the  min- 
eral resources,  chiefly  copper. 
29.  The  copper  deposits  of  the  Clifton-Morenci  district,  Arizona. 
I  .  S.  Geol.  Surv.,  Professional  Paper  no.  43,  27-375  pp.,  25  pis.,  19  figs.,  1905. 
Gives  a  full  account  of  the  geology,  petrology,  character,  occurrence,  relations,  and  origin  of 
the  copper-ore  deposits  of  this  district. 
80.  The  great  fault  of  the  Bitterroot  Mountains. 
Abstract:  Science,  new  ser.,  vol.  21,  p.  224,  1905. 
31.  The  subterranean  gases  of  Cripple  Creek  [Colorado]. 
Abstract:  Science,  new  ser.,  vol.  21,  p.  662,  1905. 
Lindgren  (Waldemar)  and  Drake  (N.  F.). 
1.  Nam  pa  folio,  Idaho-Oregon. 
U.  S.  Geol.  Surv.,  Geol.  Atlas  of  U.  S.,  folio  no.  103,  1904. 
Describes  the  geography,  the  geologic  history,  the  occurrence  and  character  of  Tertiary  strata 
and  igneous  rocks  and  Quaternary  deposits,  and  the  economic  resources,  chiefly  placer 
gold. 
2.  Silver  City  folio,  Idaho. 
U.  S.  Geol.  Surv.,  Geol.  Atlas  of  U.  S..  folio  no.  104,  1904. 
Describes  geography,  topography,  and  drainage,  the  general  geologic  history  and  structure, 
the  character  and  occurrence  of  igneous  rocks  and  sedimentary  deposits  of  Tertiary  and 
Quaternary  age,  and  the  economic  resources,  chiefly  precious  metals. 
