26tf  INDEX    TO    PUBLICATIONS    OF    U.   S.    GEOL.    SURVEY,     [bull.  177. 
Cretace*  >us  r<  >cks  of  Texas Ann  8,  i,  pp  180-181 ; 
Ann  18,  n,  pp  217-243,  321;  Ann  21,  vn,  pp  107-345;  Bull 
45,  pp  71-83;  Bull  82,  pp  114-130;  GF  3,  p  3;  GF  64,  pp  1-2 
of  Texas,  analyses  of Ann  18,  n,  p  301 
Chamidse,  description  of  certain  aberrant  forms  of,  from Bull  4,  pp  5-9 
Nueces  quadrangle GF  42,  p  2 
relation  of  Eocene  to Bull  164,  pp  35-36 
Rio  Grande  coal  fields Bull  164,  pp  15-36 
of  Utah,  Uinta  Basin Ann  17,  i,  pp  923,  924 
Uinta  Mountains  region Ann  9,  pp  689-690 
of  Virginia Bull  82,  pp  90-91,  94 
Washington  (D.  C. )  quadrangle GF  70,  pp  3-4 
of  Wyoming Bull  119,  pp  22-25 
Absaroka  district GF  52,  p  3 
Black  Hills,  southern  part Ann  21,  iv,  pp  526-541 
of  Yellowstone  Park Mon  xxxn, 
n,  pp  37,  38,  46,  48,  49,  50-51,  53, 156;  GF  30,  pp  2,  5 
Ohio  formation  of  Colorado GF  9,  pp  6,  8 
Oklune  series  of  Alaska Ann  20,  vn,  pp  163-169, 181-182, 187 
Paluxy  formation  of  Texas Ann  21,  vn,  pp  166-171 
Patoot  formation  of  Greenland Bull  82,  p  203 
Pawpaw  beds  of  Texas Ann  21,  vn,  pp  276-280 
Pierre  clay  of  Nebraska Ann  19,  iv,  pp  736,  759 
Pierre  group  in  Colorado,  Denver  Basin Mon  xxvu,  pp  69-70 
in  Colorado,  eastern Ann  17,  ji,  pp  567-569,  571 
in  North  Dakota  and  South  Dakota Bull  144,  pp  56-57 
in  Rocky  Mountain  region Bull  82,  p  191 ;  GF  36,  p  3;  GF  58,  p  2 
Pierre  shale  in  Black  Hills Ann  21,  iv,  pp  535-536 
in  Colorado GF  9,  pp  6,  8;  GF  68,  p  2 
in  Montana ." GF  1,  p  2;  GF  56,  p  3 
in  Nebraska,  southeastern WS  12,  p  20 
in  South  Dakota WTS  34,  p  17 
in  Wyoming GF  30,  p  5;  GF  52,  p  3 
west  of  glacial  Lake  Agassiz Mon  xxv,  p  86-100 
Pinyon  conglomerate  of  Wyoming GF  30,  p  5;  GF  52,  p  3 
Point  of  Rocks  group  of  Uinta  Mountains Bull  82,  p  235;  Bull  83,  p  121 
Ponderosa  marls  of  Texas Bull  82,  pp  116, 118,  123, 124, 127, 130,  221,  223 
Potomac  flora,  or  younger  Mesozoic Mon  x v 
Potomac  formation Ann  10,  p  174;  Bull  82,  pp  80-81,  90-91,  215,  250,  251-253 
at  head  of  Chesapeake  Bay Ann  7,  pp  546,  613-616 
comparison  of,  with  Wealden  of  England Ann  16,  i,  pp  471-500 
fossil  wood  and  lignite  of Bull  56 
geologic  position  of Bull  145,  pp  142-147 
Hay  creek  coal  field,  Black  hills,  compared  with Ann  19,  n,  pp  570-579 
location  and  geology  of Ann  7,  pp  546-547,  613-616,  636; 
Ann  12,  i,  pp  421-424;  Mon  xv,  pp  33-62;  Bull  56,  pp  38-39 
of  Virginia  and  Maryland Bull  145 ;  GF  13,  p  4 ;  GF  23,  p  3 
of  Washington  ( D.  C. )  quadrangle GF  70,  pp  3-4 
stratigraphic  and  paleontologic  relations  of Ann  15,  pp  307-397 
unconformity  between  Columbia  formation  and Ann  7,  pp  582-583 
Pottsboro  beds  of  Texas Ann  21,  vn,  pp  280-283 
Preston  beds  of  Texas Ann  21,  vn,  pp  252-258 
Puerco  group  of  the  Interior  region Bull  82,  p  229 
1  Niget  group  of  Washington Bull  82,  pp  1 96-197 
