FOR    THE    YEARS    1901-1905,   INCLUSIVE.  75 
Cook  (Alfred  N.). 
1.  A  new  deposit  of  fuller's  earth. 
Iowa  Acad.  Sci.,  Proc.  for  1903,  vol.  11,  pp.  135-137,  1904. 
Describes  the  chemical  composition  of  a  specimen  of  fuller's  earth  from  the  Black  Hills  of 
South  Dakota. 
Cook  (Edward  H.). 
1 .  La  M  ina  Santa  Francisca,  Mexico. 
Mg.  Mag.,  vol.  11,  pp.  424-429,  5  tigs.,  1905. 
Gives  notes  on  the  geology  of  the  region  and  the  character  and  occurrence  of  the  ores  carry- 
ing principally  silver. 
Cooper  (A.  S.). 
1.  The  origin  and  occurrence  of  petroleum  in  California. 
Min.  Ind.  for  1901,  pp.  505-509,  fig.  1,  1901. 
Describes  the  occurrence  and  character  of  the  oil. 
Cooper  (J.  C. ). 
1.  Oxygen  in  its  relation  to  mineralogy. 
Kans.  Acad.  Sci.,  Trans.,  vol.  19,  pp.  33-38,  1905. 
Cooper  (W.  F.). 
1.  Notes  on  the  wells,  springs,  and  general  water  resources  of  lower  Michigan. 
U.  S.  Geol.  Surv.,  Water-Supply  and  Irrigation  Paper  no.  102,  pp.  489-512,  1904. 
2.  Water  supply  of  the  Lower  Peninsula  of  Michigan. 
Mich.  Geol.  Surv.,  Ann.  Rept.  for  1903,  pp.  45-109,  2  pis.,  1905. 
Discusses  the  water  resources  of  the  area.    Includes  records  of  wells  and  borings. 
3.  The  coal  formation  of  Bay  County  [Michigan]. 
Mich.  Miner,  vol.  7,  nos.  9-12,  1  pi.  (map),  1905. 
Corkill  (E.  T.). 
1.  Notes  on  the  occurrences,  production,  and  uses  of  mica. 
Can.  Mg.  Inst..  Jour.,  vol.  7,  pp.  284-307,  6  figs.,  1904. 
Describes  the  occurrence  and  mining  of  mica  in  India,  the  United  States,  and  Canada,  par- 
ticularly the  occurrence  and  geologic  relations  of  deposits  in  Quebec  and  Ontario. 
2.  Petroleum  and  natural  gas  [in  Ontario]. 
Ont.  Bur.  Mines,  Rept.,  1905,  vol.  14,  pt.  1,  pp.  89-117,  3  figs.,  1905. 
Reviews  the  various  theories  of  the  origin  of  petroleum  and  natural  gas,  and  describes  the 
occurrence  and  geologic  horizon  of  petroleum  and  natural  gas  in  Ontario,  including  numer 
ous  records  of  borings. 
Corless  (C.  V.). 
1.  The  Coal  Creek  colliery  of  the  Crows  Nest  Pass  Coal  Co.  [Canada]. 
Can.  Mg.   Rev.,  vol.  20,  pp.  60-67,16  figs.,  1901;   Can.  Mg.  Inst.,   Jour  ,  vol.  4,  pp.  155-173,  11 
figs.,  1901. 
Gives  a  general  description  of  the  geologic  occurrence  of  the  coal. 
2.  Notes  on  the  geology  and  ore  deposits  of  southeastern  British  Columbia. 
Can.  Mg.  Inst..  Jour.,  vol.  5,  pp.  503-527,  1  pi.,  1902;  Can.  Mg.  Review,  vol.  21,  pp.  211-218,  1902. 
Describes  the  geology  and  occurrence  of  ore  bodies  of  this  area. 
Cornwall  (H.  B.). 
1.  Occurrence  of  greenockite  on  calcite  from  Joplin,  Missouri. 
Am.  Jour.  Sci.,  4th  ser.,  vol.  14,  pp.  7-8,  1902. 
Corss  (Frederic). 
1.  The  buried  valley  of  Wyoming  [Pennsylvania]. 
Wyoming  Hist.  &  Geol.  Soc,  Proc.  &  Coll.,  vol.  8,  pp.  42-44,  1^04. 
"Describes  the  position,  formation,  and  filling  of  a  pre-Glacial  valley  at  Wyoming. 
Coste  (Eugene). 
1.  Volcanic  origin  of  natural  gas  and  petroleum. 
Eng.  &  Mg.  Jour.,  vol.  75,  p.  439,  1903. 
Abstract  from  paper  read  before  the  Can.  Mg.  Inst.,  March,  1903. 
