FOR    THE    YEARS    1901-1905,   INCLUSIVE.  257 
Orr  (William). 
1.  An  outline  of  eight  excursions  for  the  study  of  the  physical  geography  and  geol- 
ogy of  Springfield  [Massachusetts]  and  vicinity. 
Published  for  the  Springfield  Geological  Club  by  the  City  Library  Association,  Springfield, 
Mass.,  16  pp.,  2  pis.,  1901. 
Ortmann  (Arnold  E.). 
1.  The  theories  of  the  origin  of  the  Antarctic  faunas  and  floras. 
Am.  Nat.,  vol.  35,  pp.  139-142,  1901. 
Reviews  the  literature  on  the  subject, 
2.  Ueber  die  Decapoden-Gattungen  Linuparus  und  Podocrates. 
Centralbl.  f.  Min.,  Geol.,  u.  Pal.,  pp.  713-714,  1901. 
Discusses  the  relationships  of  these  genera  of  Crustacea. 
3.  The  geographical  distribution  of  freshwater  decapods  and  its  bearing  upon  ancient 
geography. 
Am.  Phil.  Soc,  Proc,  vol.  41,  pp.  267-400,  8  figs.,  1902. 
Includes  a  discussion  of  the  geography  of  the  earth's  surface  during  Cretaceous,  Tertiary,  and 
Quaternary  times. 
Orton  ( Edward) . 
1.  Petroleum  and  natural  gas  in  New  York. 
N.  Y.  State  Mus.,  53d  Ann.  Rept.,  vol.  1,  pp.  391-526,  3  maps,  1901. 
See  Bull.  U.  S.  Geol.  Surv.,  No.  188,  Orton  no.  4172. 
Orton  (Edward,  jr.). 
1.  The  organization  and  work  of  the  Geological  Survey  of  Ohio. 
Ohio  Geol.  Surv.,  4th  ser.,  Bull.  no.  1,  pp.  i-xxi,  1903. 
Gives  an  outline  of  the  work  and  publications  of  the  preceding  and  present  organizations  of 
the  geological  survey  of  Ohio. 
Orton  (Edward,  jr.)  and  Peppel  (S.  V.). 
1.  The  lime  resources  of  Ohio  available  for  Portland-cement  manufacture. 
Ohio  Geol.  Surv.,  4th  ser.,  Bull.  no.  3,  pp.  88-101,  1904. 
Discusses  the  occurrence,  character,  and  geologic  relations  of  limestones  in  Ohio  suitable  for 
use  in  manufacture  of  cements.    Gives  a  table  with  many  analyses  of  limestone. 
Osann  (A.). 
1.  Beitritge  zur  Geologie  und  Petrographie  der  Apache  (Davis)  Mts.,  Westtexas. 
Tschermak's  Min.  &  Petrogr.  Mitt.,  N.  F.,  Bd.  15,  pp.  394-456,  2  pis.  and  1  fig.,  1896. 
Decribes  the  general  geology  of  the  region,  the  occurrence  of  igneous  and  Carboniferous  and 
Cretaceous  sedimentary  rocks,  and  the  petrographie  characters  of  the  igneous  rocks. 
2.  Notes  on  certain  Archaean  rocks  of  the  Ottawa  Valley  [Canada]. 
Can.  Geol.  Surv.,  Ann.  Rept.,  new  ser.,  vol.  12,  pp.  1  o-84  o,  12  figs.,  11  pis.,  1902. 
Discusses  petrology  of  this  region  and  occurrence  and  characters  of  economic  minerals. 
Osborn  (Henry  Fairfield). 
1.  The  recent  progress  of  vertebrate  paleontology  in  America. 
Science,  new  ser.,  vol.  13,  pp.  45-49,  1901. 
Abstract  of  lecture  delivered  at  Trinity  College,  Hartford,  Conn. 
2.  Recent  zoo-paleontology. 
Science,  new  ser.,  vol.  14,  pp.  330-331.  1901. 
Contains  notes  on  papers  relating  to  the  John  Day  beds  and  to  the  Kansas  chalk. 
3.  Recent  zoo-paleontology. 
Science,  new  ser.,  vol.  14,  pp.  699-700,  1901. 
Reviews  Wortman's  work  on  the  Carnivora  and  Gidley's  work  on  Pleistocene  horses. 
4.  Des  m£thodes  precises  mises  actuel lenient  en  ceuvere  dans  l'etude  des  vertebres 
fossiles  des  Etats-Unis  d*Amerique. 
Intern.  Cong.  Geol.,  Compte  Rendu,  viii  session,  pp.  353-356,  2  pis.,  1901. 
5.  Correlation  des  horizons  de  mammiferes  Tertiaires  en  Europe  et  en  Amerique. 
Intern.  Cong.  Geol.,  Compte  Rendu,  viii  Session,  pp.  357-363,  1901. 
Bull.  301-06 17 
