306  BIBLIOGRAPHY    OF    NORTH    AMERICAN    GEOLOGY 
Shimer  (Hervey  Woodburn) — Continued. 
5.  Upper  Siluric  and  Devonic  faunas  of  Trilobite  Mountain,  Orange  County,  New 
York. 
N.  Y.  State  Mus.,  Bull.  80,  pp.  173-269.  3  pis.  and  10  figs.,  1905. 
Describes  the  situation,  general  geology  and  geological  structure  of  Trilobite  Mountain,  with 
a  brief  review  of  the  work  previously  done,  and  in  detail  the  character,  occurrence,  and. 
relations  of  the  Devonian  formations  and  the  fossil  faunas  contained  in  them. 
Shimer  (Hervey  W.)  and  Grabau  (Amadeus  W.  )• 
1.  Hamilton  group  of  Thedford,  Ontario. 
Geol.  Soc.  Am.,  Bull.,  vol.  13,  pp.  149-186.  5  tigs.,  1902;  Columbia  Univ.,  Geol.  Dept..  Oontr.. 
vol.  10,  no.  83,  1902. 
Describes  the  lithologic  and  faunal  characters  of  the  local  sections,  discusses  the  correlation 
of  the  beds  and  presents  notes  on  some  of  the  species. 
Siebenthal  (C.  E.). 
1.  On  the  use  of  the  term  Bedford  limestone. 
Jour.  Geol.,  vol.  9,  pp.  234-235,  1901. 
Discusses  the  use  of  the  name  in  Ohio  and  Indiana  and  considers  that  the  Bedford  of  Indiana 
has  priority. 
2.  The  Silver  Creek  hydraulic  limestone  of  southeastern  Indiana. 
Ind.,  Dept.  of  Geol.  and  Nat.  Res.,  25th  Ann.  Rept.,  pp.  331-389,  2  pis..  2  tigs.,  1901. 
Reviews  the  geologic  literature  regarding  the  region,  describes  the  stratigraphic  and  paleon- 
tologic  features  and  nomenclature  of  the  Devonian  formations,  and  gives  an  account  of  the 
economic  uses  of  the  limestone. 
3.  The  Indiana  oolitic  limestone  industry  in  1900. 
Ind.,  Dept.  of  Geol.  and  Nat.  Res.,  25th  Ann.  Rept.,  pp.  390-393,  1901. 
4.  Structural  features  of  the  Joplin  district  [Missouri]. 
Econ.  Geol.,  vol.  1,  pp.  119-128,  1  pi.,  1905. 
Reviews  the  views  of  previous  workers  in  the  area  regarding  the  structure  of  the  district  and 
the  origin  of  the  ores,  and  describes  the  geologic  structure  of  the  Cornfield  region  and  dis- 
cusses its  origin. 
Silver  (L.  P.). 
1.  The  sulphide  ore  bodies  of  the  Sudbury  region  [Ontario]. 
Can.  Mg.  Inst.,  Jour.,  vol.  5,  pp.  528-551,  1  fig.,  9  pis.,  1902;  Can.  Mg.  Rev.,  vol.  21,  pp.  207-211, 
1902. 
Discusses  the  occurrence  and  origin  of  the  nickel-bearing  ore  deposits. 
2.  Petrography  of  some  igneous  rocks  of  the  Kettle  River  mining  division,  British 
Columbia. 
Ottawa  Nat.,  vol.  17,  pp.  85-91,  1903. 
Describes  their  characters  and  occurrence. 
Simmersbach.  (B.). 
1.  Die  Steinkohlengebiete  von  Pennsylvanien  und  Westvirginien. 
Zeitsch.  f.  prak.  Geol.,  vol.  11,  pp.  413-423,  1  fig.,  1903. 
Gives  a  general  account  of  the  Appalachian  coal  field,  describing  its  geographic  extent,  and 
the  succession,  thickness,  character,  and  distribution  of  the  geologic  formations. 
Simmons  (Jesse). 
1.  Tungsten  ores  in  the  Black  Hills. 
Mg.  Rep.,  vol.  50,  pp.  217-218,  1904. 
Describes  the  occurrence  and  character  of  tungsten  ores  and  discusses  their  origin. 
Simonds  (Frederic  William). 
1.  The  minerals  and  mineral  localities  of  Texas. 
Abstract:  Science,  new  ser.,  vol.  14,  p.  797,  1901. 
Gives  an  account  of  the  preparation  of  a  list  of  Texas  minerals  and  localities. 
2.  Dr.  Ferdinand  von  Roemer,  the  father  of  Texas  geology;  his  life  and  work. 
Am.  Geol.,  vol.  29,  pp.  131-140,  pi.,  1902. 
3.  The  minerals  and  mineral  localities  of  Texas. 
Tex.  Univ.,  Min.  Surv.,  Bull.  no.  5,  pp.  3-95,  1902. 
Describes  characters  and  occurrences  of  minerals  found  in  Texas. 
