warman.]  CORRELATION CRETACEOUS.  251) 
Corundum,  statistics  of MR  1882,  pp  476-477;  MR  1883-84,  pp  714- 
71!),  733-736;  MR  1885,  pp  429-432;  MR  1886,  pp  585-586; 
MR  1887,  p  553;  MR  1888,  p  577;  MR  1889-90,  p  457;  MR 
1891,  p  555;  MR  1892,  pp  751-752;  MR  1893,  pp  674-678; 
Ann  16,  iv,  pp  590-592;  Ann  17,  in  cont,  pp  933-935;  Ann 
18,  v  cont,  pp  1227-1229;  Ann  19,  vi  cont,  pp  523-52(5;  Ann 
20,  vi  cont,   pp  (105-607;  Ann  21,  vr  cont,  pp  463,  466-467 
Corundum  gems,  occurrence,  etc.,  of Vnn  21,  vi  cont,  pp  432-449 
Coryphod  m  beds  of  Utah Bull  84,  p  324 
( losalite  from  (  olorado,  La  Plata  County,  description  and  analysis  of. .  Bull  20,  pp  95-96 
Costa  Rica,  geology  of,  sketch  of Bull  84,  p  188 
Cosumnes  River,  California,  profile  of WS  44,  p  94 
Coteau  des  Prairies,  section  across,  etc Mon  xxv,  pp  36-39 
Coticule,  or  quartz-garnet  rock,  of  Massachusetts,  western Mon  xxix,  p  174 
Cotton  win  xl  limestone  of  Nebraska Ann  19,  iv,  p  738 
Country  rock,  alteration  of ,  in  Idaho  Basin  and  Boise  Ridge. .Ann  IS,  m,  pp  638-647 
alteration  of,  in  Oregon,  Bohemia  mining  region Ann  20,  in,  pp  14-15 
altered  and  bleached,  analyses  of,  from  California,  Nevada  County Bull  148, 
pp209,  210;  Bull  168,  p  195 
influence  of,  on  vein  values  in  ( 'olorado,  Telluride  district Ann  18, 
in,  pp  815-818 
Coutchiching  series  of  rocks  of  Rainy  Lake  region Bull  86,  pp  65-67,  162-167 
Covellite,  analysis  of,  from   Montana,  Butte. Bull  167,  p  64;  GF  38,  p  6 
Cow  Creek  beds  of  Texas Ann  21,  vn,  pp  142-143 
Cowgill  (  E.  B.),  irrigation  practice  on  Great  Plains WS  5 
Cowlitz  Glacier,  Mount  Rainier,  present  condition  of Ann  IS,  n,  pp  398-399 
Crag  formation,  England,  correlation  of Ann  IS,  n,  p  338 
Craighill  (W.  P. ),  improvement  of  Great  Kanawha  Liver MR  1892,  pp  540-546 
Crandall  Basin,  Wyoming,  dissected  volcano  of Mon  xxxn,  n,  pp  215-268 
( Iranston  beds  of  Narragansett  Basin Mon  xxxni,  pp  159-164 
Crassatellidae  of  Colorado  formation Bull  106,  p  96 
of  Cretaceous  of  Vancouver  Island Bull  51 ,  pp  39-40 
of  marl  beds  of  New  Jersey Mon  ix,  pp  115-124;  Mon  xxiv,  pp  60-61 
Crater,  an  example  of TF  2,  p  20 
Craters  of  Bonneville  Basin,  basaltic Mon  i,  pp  319-330 
of  California,  Mono  Valley Ann  8,  i,  pp  372-389 
of  Uinkaret  Plateau,  basaltic Ann  2,  pp  118,  121 
Crater  Lake,  Oregon,  history  of TF  2,  p  20 
special  examination  of Ann  8,  1,  pp  156-158 
Crawfish  as  soil-makers Ann  12,  1,  pp  278-279 
Crazy  Mountain  granite  of  Montana,  Little  Belt  Mountains  quadrangle . .  .GF  56,  p  4 
Crazy  Mountains,  Montana,  description  of GF  56,  p  1 
geology  of,  descriptive GF  56,  pp  5-6 
rocks  and  structure  of GF  1,  pi 
Credr  eriacese,  from  Laramie  group Bull  37,  pp  96-100 
from  Yellowstone  Park Mon  xxxn,  n,  pp  742-743 
Crepidula  bed  of  Alaska Bull  84,  p  324 
Crested  Butte,  Colorado,  structure  and  rocks  of Ann  14,  n,  pp  193-194 
Crested  Butte  and  Anthracite  quadrangles,  Colorado,  geology  of GF  9 
Cretaceous:  a  correlation  essay,  by  C.  A.  White Bull  82 
Cretaceous  base-level  in  McAlester-Lehigh  region,  Indian  Terr Ann  19,  in,  p  433 
Cretaceous  fauna;  Aucella  of  California Mon  xin,  pp  226-232 
birds Ann  3,  pp  49-88 
Cephalopoda  from  marls  of  New  Jersey Mon  xvni,  pp  243-283 
dinosaurs  of  North  America Ann  16,  i,  pp  203-226 
