332  BIBLIOGRAPHY    OF    NORTH    AMERICAN    GEOLOGY 
Todd  (James  E.)  and  Hall  (C.  M.). 
1.  Alexandria  folio,  South  Dakota. 
U.  S.  Geol.  Surv.,  Geol.  Atlas  of  U.  S.,  folio  no.  100,  1903. 
Describes  geography,  general  geology,  Algonkian,  Cretaceous  and  Quaternary  deposits,  the 
geologic  history,  and  economic  and  artesian  water  resources  of  the  Alexandria  quadrangle. 
2.  Geology  and  water  resources  of    part  of  the  lower  James  River  valley,   South 
Dakota. 
U.  S.  Geol.  Surv.,  Water-Supply  and  Irrigation  Paper  no.  90,  17  pp..  ii;>  pis.,  1904. 
Describes  occurrence  and  character  of  Algonkian,  Cretaceous,  and  Quaternary  formations, 
the  geologic  history  of  the  region,  and  the  water  supply,  especially  from  artesian  wells,  giv- 
ing records  of  borings. 
3.  De  Smet  folio,  South  Dakota. 
U.  S.  Geol.  Surv.,  Geol.  Atlas  of  U.  S.,  folio  no.  114,  1904. 
Describes  tin  general  geology,  the  character,  occurrence,  and  relations  of  Cretaceous  strata 
and  Quaternary  deposits,  the  geologic  history,  and  the  economic  resources,  ami  discusses  in 
detail  the  water  resources  of  the  area. 
Todd  (J.  H.). 
1.  Some  observations  on  the  pre-Glacial   drainage  of  Wayne  and  adjacent  counties 
[Ohio]. 
Ohio  State  Acad.  Sci.,  special  Papers  no.  3,  pp.  17-67,  map,  1900. 
Tower  (Walter  S.). 
1»  The  development  of  cut-off  meanders. 
Am.  Geog.  Soc,  Hull.,  vol.  36,  pp.  589-599,  ::  figs.,  1904. 
2.  Topography  and  travel  in  Pennsylvania. 
Am.  Geog.Soc,  Bull.,  vol.  37,  pp.  L45-154,  1905. 
Describes  physiographic  features  of  Pennsylvania. 
Transeau  ( Kdgar  N.). 
1.  On  the  greographie  distribution  and  ecological  relations  of  the  bog  plant  societies 
of  northern  North  America. 
Hot.  (ia/.,  vol.  36,  pp.  inl  420,  3  figs.,  1903. 
Includes  a  discussion  of  pre-Glacial  distribution  and  Glacial  ami  later  migrations  of  these 
plant  societies. 
Treadwell  (John  C.) . 
1.  The  Sahuayacan  mining  district,  Mexico. 
Eng.  A  Mg.  Jour.,  vol.  80,  pp.  L213-1216,  <i  figs.,  1905. 
Contains  notes  on  the  geology  of  the  region. 
True  (Frederick  W. ). 
1.  Diagnosis  of  a  new  genus  and  species  of  fossil  sea-lion  from  the  Miocene  of  Oregon. 
smith.  Misc.  Coll..  vol.  is  (Quart,  [ssue,  vol. ;;.  pt.  I  i,  pp.  47-49,  1905. 
2.  The  first  discovery  of  fossil  seals  in  America. 
Science,  new  ser.,  vol.  22,  i>.  791.  1905. 
True  (H.  L.). 
1.  The  cause  of  the  Glacial  period:  being  a  resume  and  discussion  of  the  current 
theories  to  account  for  the  phenomena  of  the  drift,  with  a  new  theory  by  the 
author. 
Cincinnati,  The  Robert  Clark.'  <  Jompany,  1902.     xi.  162  pp.,  illus. 
Trumbull  (L.  W.). 
1.  A  preliminary  report  upon  the  coal  resources  of  Wyoming. 
Wyo.  Univ.,  School  of  Mines,  Bull.,  no.  7,  95  pp.,  18  pis.,  1905. 
Includes  a  general  account  of  the  geology  of  the  Cretaceous  rocks  of  Wyoming. 
Turnbull  (J.  M.). 
1.  Geological  sketch  of  the  Bank  head  [Alberta]  coal  field. 
Can.  Mg.  Rev.,  vol.  23,  pp.  213-214,  4 pis.,  1  fig.,  1904. 
Describes  the  general  geology,  the  occurrence  of  the  coal  beds  of  Cretaceous  age,  and  the 
character  and  mining  of  the  coal. 
