312  BIBLIOGRAPHY    OF    NORTH    AMERICAN    GEOLOGY 
S  11    h  i  ( reorge  Otis)  and  Willis  (Bailey). 
1.   The  Ciealum  iron  ores,  Washington. 
Am.  Inst.  Mg.  Engrs.,  Trans.,  vol.  30,  pp.  356-366,  1  fig.,  1901. 
Describes  the  character,  occurrence,  and  origin  of  the  ores  and  the  general  geologic  and  struc- 
tural features  of  the  region. 
h  (James  Perrin). 
1.  The  b  >rder  line  between  the  Paleozoic  and  Mesozoic  in  western  America. 
Jour.  Geol.,  vol.  9,  pp.  512-521.  1901. 
Di-cusses  briefly  the  criteria  by  which  geologic  time  divisions  of  the  line  between  this  Paleo- 
zoic and  Mesozoic  as  influenced  by  the  faunas  of  certain  beds  of  Idaho  and  California  and 
their  relation  to  allied  Asiatic  and  European  faunas. 
2.  Ueber  Pelecypodenzonen  in  der  Trias  Nord-Amerikas. 
Central!)],  fur  Min.,  etc.,  no.  22,  pp.  689-695,  1902. 
Describes  the  distribution  of  Trias  sediments  and  gives  a  table  showing  the  occurrence  aDd 
relations  of  pelecypods  in  the  Trias  in  North  America. 
3.  The  Carboniferous  ammonoids  of  America. 
V.  S.  Geol.  Surv.,  Mon.,  vol.  12,  211  pp..  29  pis.,  1903. 
Reviews  briefly  the  occurrence  of  ammonoids  in  the  different  Carboniferous  formations  of 
America,  gives  tables  of  the  correlation  of  <  larboniferous  formations,  discusses  the  classifi- 
cation and  phylogeny,  and  describes  and  figures  American  genera  and  species. 
4.  Periodic  migrations  between  the  Asiatic  and  the  American  coasts  of  the  Pacific 
( >cean. 
Am.  .lour.  Sci.,  4th  ser.,  vol.  17.  pp.  217-233.  1904. 
Discusses  geographic  distribution  and  relations,  and  e\  idences  of  migrations  and  derivations 
of  faunas  in  various  provinces  in  Paleozoic,  Mesozoic,  and  Tertiary  time,  and  physiographic 
changes. 
5.  The  comparative  stratigraphy  of  the  marine  Trias  of  western  America. 
Cal.  Acad.  Sci..  Proc,  3d  ser.,  vol.  i,  pp.  323-430,  10  pis.,  1904. 
Describes  the  general  development  of  Triassic  formations  in  the  various  .geographic  provinces 
of  the  world,  their  correlation  and  faunal  characteristics,  and  in  detail  the  Triassic  strata 
of  western  North  America,  and  gives  systematic  descriptions  of  Triassic  genera  and  >pecies 
of  cephalopods. 
Smith.  (James  Perrin)  and  Weller  (Stuart). 
1.  Prodromites,  a  now  ammonite  genus  from  the  Lower  Carboniferous. 
Jonr.  Geol.,  vol.  9,  pp.255-268,  3  pis  .  1901. 
Discusses  the  occurrence  of  ammonites  in  upper  Paleozoic  rocks  of  the  Mississippi  Valley,  and 
describes  a  new  genus  and  two  new  species. 
Smith  (J.  P.  ),  Hyatt  (A.)  and. 
1.  The  Triassic  cephalopod  genera  of  America. 
See  Hyatt  (A.)  and  Smith  (J.  P.),  1. 
Smith  (Otto  M. )  and  Standley  (Paul  C). 
1.  The  Pierson  Creek  mint's  [Missouri]. 
Drury  Coll.,  Bradley  Geol.  Field  Station,  Bull.,  vol.  1,  pp.  72-79,  1  fig.,  1905. 
Contains  notes  on  the  occurrence  and  geologic  relations  of  lead  and  zinc  ores. 
Smith  (Philip  S.),  Smyth  (Henry  Lloyd)  and. 
1.  The  copper  deposits  of  Orange  County,  Vermont. 
See  Smyth  (Henry  Lloyd)  and  Smith  (Philip  S.),  1. 
Smith  (W.  D.). 
1.  Advance  report  to  the  chief  of  the  Alining  Bureau  upon  the  coal  deposits  of  Batan 
Island  [Philippine  Islands]. 
U.  S.  War  Dept.,  Bureau  of  Insular  Affairs,  Washington,  pp.  35-58,  1905. 
Smith  (W.  D.). 
1.  The  development  of  Scaphites. 
Jour.  Geol.,  vol.  13,  pp.  635-654,  3  pis.,  1905. 
