580  INDEX    TO    PUBLICATIONS    OF    U.    S.   GEOL.    SURVEY,     [bull.  177 
Nuculidse  from  Colorado  formation Bull  106,  p  94 
from  Cretaceous  of  Pacific  coast Bull  133,  pp  51-53 
from  marl  beds  of  New  Jersey Mon  ix,  pp  102-112,  227-230 
from  Miocene  marls  of  New  Jersey Mon  xxiv,  pp  50-52 
Nueces  quadrangle,  Texas,  geology  of GF  42 
Nueces  River,  Texas,  profile  of WS  44,  p  35 
relation  of  Cretaceous  to  Eocene  along Bull  164,  p  36 
Nulato  sandstone  of  Alaska Ann  21,  n,  p  478;  Bull  84,  p  331 
of  Alaska,  remarks  on Ann  18,  in,  p  196 
Nummulitic  beds  of  Florida Bull  84,  pp  103-104,  331 
Nushagak  beds  of  Alaska,  southwestern,  notes  on.. Ann  20,  vu,  pp  173-174,  184,  187 
Nushagak  River,  Alaska,  notes  on Alaska  (2),  p  119 
Nussbaum  formation  of  Colorado GF  36,  p  3-;  GF  58,  p  2;  GF  68,  p  2 
Nuzotin  Mountains,  Alaska,  features  of Ann  21,  n,  p  346 
Nuzotin  series  of  rocks  of  Alaska Ann  21,  n,  pp  359-360,  369 
Nympmeacese,  extinct,  of  North  America Mon  xxxv,  pp  91-93 
Nymphalidse  of  Florissant,  Colorado Ann  8,  i,  pp  441-467 
Oak  Grove  sands  of  Florida,  correlation  of Ann  18,  n,  p  340 
Oakland  limestone-lentil  of  Oregon GF  49.  p  3 
Oakville  beds  of  Texas,  correlation  of Ann  18,  n,  p  339 
Obolella  shales  of  Montana,  near  Three  Forks Bull  110,  p  23 
Obsidian,  analysis  of,  from  California,  Borax  and  Clear  lakes Mon  xin, 
pp  154,  159;  Bull  148,  p  223;  Bull  168,  p  212 
analysis  of,  from  California,  Medicine  Lake Bull  64,  p  50 
from  California,  Modoc  County  (rhyolitic).-Bull  148,  p  228;  Bull  168,  p  217 
Mono  Lake  (rhyolitic) Ann  7,  p  291; 
Bull  148,  p  229;  Bull  150,  p  151;  Bull  168,  p  219 
Mono  Valley  ( scoriaceous ) Bull  9,  p  14 
from  Lipari  Islands Ann  7,  p  291 
from  Mexico,  Cerro  de  las  Navajas Ann  7,  p  291 
from  New  Mexico,  Tewan  Mountains , .Ann  7, 
p  291;  Bull  60,  p  155;  Bull  148,  p  186;  Bull  168,  p  172 
from  Yellowstone  Park,  Obsidian  Cliff,  and  near  Willow  Park Ann  7, 
pp  282,  291;  Bull  148,  p  130;  Bull  168,  p  104 
columnar  structure  in Ann  7,  p  257 
from  California,   Mono  Lake,   description  of,   as  one  of  the  educational 
series  ( rhyolitic) Bull  150,  pp  149-151 
occurrence  and  statistics  of MR  1882,  p  496;  MR  1883-84, 
p  772;  MR  1886,  p  597;  MR  1893,  p  682;  Ann  16,  iv.  p  605 
of  California,  andesitic  and  basaltic Mon  xni,  pp  153-154,  158-161 
of  New  Mexico,  Tewan  Mountains Bull  66,  p  11 
of  Yellowstone  Park,  columnar Mon  xxxn,  ir,  pp  360-361 
thin  sections  of,  from  Yellowstone  Park Ann  7,  pp  274-275 
<  Obsidian  Cliff,  Yellowstone  Park,  geology,  petrography,  etc.,  of.. Ann  7,  pp  249-295 
rhyolite  of Mon  xxxn,  n,  pp  359-366 
Ocala  group  of  Florida,  correlation  of Ann  18,  n,  p  341;  Bull  84,  pp  103-104,  331 
Ocean  waters,  general  chemistry  of Mon  xi,  pp  178-181 
Ocheesee  beds  of  Florida,  correlation  of Bull  84,  pp  105-107,  331 
Ocher,  analysis  of,  from  Massachusetts,  East  Whately Bull  126,  p  101 
analysis  of,  from  Persian  Gulf MR  1883-84,  p  926 
from  Virginia,  Marksville MR  1885,  p  528 
from  West  Virginia,  Jefferson  County Bull  60,  p  164 
of  Virginia-Maryland-West  Virginia,  Harpers  Ferry  quadrangle .  .GF  10,  p  4 
