164  BIBLIOGRAPHY    OF    NORTH    AMERICAN    GEOLOGY 
Heurteau  (Ch.  E. ). 
1.  Les  charbons  gras  de  la  Pennsylvanie  et  de  la  Virginie  occidentale. 
Ann.  des  Mines.  10th  ser.,  vol.  3.  pp.  379-475,  12  figs.,  1903. 
Describes  the  general  geology  of  the  bituminous  coal  regions  of  Pennsylvania  and  West  Vir- 
ginia, the  occurrence  of  the  coal  seams,  the  composition  and  fuel  values  of  the  coals,  and 
the  mining,  transportation,  and  sale  of  coal. 
2.  L' Industrie  du  petrole  en  Calif  ornie. 
Ann.  des  Mines,  10th  s«r.,  vol.  4,  pp.  215-249,  1  pi.,  4  figs.,  1903. 
Describes  the  location  and  genera  1  geology  of  the  petroleum  field  of  southern  California,  and 
the  character,  production,  and  utilization  of  the  petroleum,  and  compares  it  with  that  pro- 
duced in  Texas. 
Hewett  (G.  C.). 
1.  Notes  on  southwestern  Utah  and  its  iron  ores. 
Colo.  Sci.  Soc,  Proc,  vol.  7,  pp.  55-66,  11  figs.,  1902. 
Contains  observations  on  the  geology  and  occurrence  of  the  iron  ores. 
2.  The  age  of  the  homestake  lode,  South  Dakota. 
Eng.  &  Mg.  Jour.,  vol.  75,  pp.  563-564,  1903. 
Discusses  the  occurrence  and  the  origin  of  the  gold. 
3.  [Discussion  of  paper  by  W.  H.  Weed,  "Section  across  the  Sierra  Madre  Occidental 
of  Mexico."] 
Am.  Inst,  Mg.  Engrs.,  Trans.,  vol.  33,  pp.  1059-1060,  1903. 
Adds  observations  upon  the  geology  of  the  region. 
Hice  (Richard  R.). 
1.  Northward  flow  of  ancient  Beaver  River. 
Geol.  Soc.  Am.,  Bull.,  vol.  14,  pp.  297-304,  5  pis.,  1  fig.,  1903. 
Describes  history  of  Beaver  River  and  discusses  evidence  of  potholes  for  showing  direction  of 
flow. 
2.  The  clays  of  the  upper  Ohio  and  Beaver  River  region. 
Am.  Ceramic  Soc,  Trans.,  vol.  7,  pt.  2,  14  pp.,  1905. 
Describes  the  general  geology  of  the  Carboniferous  ami  Quaternary  deposits  of  western  Penn- 
sylvania, and  partic  ilarly  the  geologic  occurrence  and  character  of  the  clays. 
Hidden  (William  E.). 
1.  Some  results  of  late  mineral  research  in  Llano  County,  Texas. 
Am.  Jour.  Sci.,  4tl)  ser.,  vol.  19,  pp.  125- 133,  4  Jigs.,  1905. 
Describes  the  occurrence  and  characters  and  radio-activity  of  minerals  occurring  at  Barrin- 
ger-Hill,  Llano  County,  Texas. 
Higgins  (Edward,  jr.). 
1.  Zinc  mining  and  smelting  in  southwestern  Virginia. 
Eng.  &  Mg.  Jour.,  vol.  79,  pp.  608-610,  4  figs.,  1905. 
Describes  the  occurrence  and  geologic  relations  of  zinc  ores. 
Hijar  (Jeronimo) . 
1.  Ligeros  datos  sobre  los  criaderos  de  Petioles  (Oax. )  y  Tamazula  (Jal. ),  [Mexico]. 
Soc.  Geol.  Mex.,  Bol.,  t.  1,  pp.  207-212,  1905. 
Gives  some  account  of  the  character  and  occurrence  of  the  ore  deposits  of  these  localities, 
containing  principally  gold.' 
Hilgard  (E.  W.). 
1.  A.  historical  outline  of  the  geological  and  agricultural  survey  of  the  State  of 
Mississippi. 
Am.  Geol.,  vol.  27,  pp.  284-311,  1901. 
Gives  an  account  of  the  Avork  of  this  organization  and  a  list  of  its  publications. 
2.  A  sketch  of  the  pedalogical  geology  of  California. 
Abstract:  Jour.  Geol.,  vol.  9,  pp.  74-75,  1901;  Geol.  Soc.  Am.,  Bull.,  vol.  12,  pp.  499-500,  1901. 
General  notes  on  the  soils  of  the  State. 
3.  The  debris  fans  of  the  arid  region  in  their  relation  to  the  water  supply. 
Abstract:  Science,  new  ser.,  vol.  15,  p.  414,  1902. 
Describes  the  structure  of  fans  at  the  mouths  of  canyons  and  their  relations  to  water  supply. 
