602  INDEX    TO    PUBLICATIONS    OF    IT.   S.    GEOL.    SURVEY.      [buijuIW; 
Peckham  (S.  F. ),  petroleum  in  southern  California Ann  16,  iv,  pp  370-374 
Pecopteridese  of  Carboniferous  of  Missouri Bull  98,  pp  <><  M>7 
of  Coal  Measures,  Lower,  of  Missouri Mon  xxxvn,  pp  74-97 
Pecos  River,  flow  of,  measurements  of WS  28,  pp  125-126, 130;  WS  37,  pp  285-286 
irrigation  and  irrigation  canals  in  valley  of .Ann  12, 
ii,  pp  282-290;  Ann  13,  m,  pp  187-191 
profile  of WS  44,  ] .  37 
Pectinidse  from  Colorado  formation Bull  106,  p  72 
from  Cretaceous  of  Pacific  coast Bull  133,  pp  36-38 
from  marls  of  New  Jersey Mon  ix,  pp  224-227 
from  Miocene  marls  of  New  Jersey Mon  xxiv,  pp  30-34 
Pectolite,  analysis  of,  from  Alaska Bull  9,  p  10 
analysis  of,  from  New  Jersey,  Bergen  Hill Bull  113,  p  36;  Bull  167,  p  14 
chemical  constitution  of ■. Bull  125,  pp  85, 106 
constitution  of,  experiments  relative  to Bull  167,  pp  1 4-16 
occurrence  of MR  1883-84,  p  774;  MR  1887,  pp  561-562 
Pegmatite  of  Maryland,  origin  of Ann  15,  pp  675-684 
of  Massachusetts,  western Mon  xxix ,  pp  322-323 
origin  of,  theories  of Ann  16,  i,  pp  687-688 
thin  section  of,  from  California,  near  Sonora Ann  17,  i,  pp  748-749 
Pegmatite  dikes  and  minerals  in  Massachusetts,  western.  .Mon  xxix,  pp  216,  323-330 
Pelecypoda,  descripth  >ns  of Bull  106,  pp  54-1 27 
from  Colorado  formation Bull  1 06,  pp  54-127 
from  Cretaceous  of  Pacific  coast Bull  133,  pp  34-62 
from  Devonian  beds  of  New  York Bull  16,  pp  23,  58-62 
from  Eocene  of  middle  Atlantic  slope Bull  141,  pp  72-78 
from  Yellowstone  Park Mon  x  kxii,  ii,  pp  610-629,  632,  633-635,  637-639 
Pele's  hair  in  Hawaii Ann  4,  p  108 
Pelhamine,  analysis  of,  from  Massachusetts,  Pelham Bull  126,  p  55 
Peneplain,  Cretaceous,  in  Connecticut,  origin,  etc.,  of Ann  18,  n,  pp  157-168 
Peneplains,  classification  of  relief  with  reference  to Ann  19,  n,  pp  23-31 
<•(  >rrelation  of Ann  19,  n,  pp  24-26 
<  >f  Kentucky,  London  quadrangle GF  47,  p  1 
of  Kentucky-Virginia-Tennessee,  Estillville  quadrangle GF  12,  p  1 
origin  of,  theories  of Ann  19,  n,  pp  32-34 
Penfield  (S.  L. ),  partial  report  on  calaverite  crystals  from  Colorado,  Cripple 
Creek Ann  16,  ii,  pp  135-136 
Pennine,  analyses  and  chemical  constitution  of Bull  125,  p  53 
Pennine  system,  name  proposed Bull  80,  p  81 
Pennington  shale  of  Kentucky,  Virginia,  and  Tennessee Bull  111, 
p  37;  GF  12,  p  3;  GF  27,  p  3;  GF  33,  p  2;  GF  40, 
p2;  GF46,  p3;  GF  47,  p  2;  GF53,  p3;  GF59,  p4 
Pennsylvania;  Allegheny  River,  flow  of,  measurements  of Ann  20, 
iv,  pp  195-197;  WS  36,  pp  157-159 
Allegheny  River,  profile  of WS  44,  p  44 
altitudes  in Ann  19,  i,  pp  21 7-219; 
Ann  20,  i,  pp  363-370;  Ann  21,  i,  pp  421-426,  427-436,  437- 
444?  446;  Bull  5,  pp  245-274;  Bull  76;  Bull  160,  pp  596-645 
amethyst  in,  occurrence  of Ann  16,  iv,  p  601 
anthracite  basins  of,  structure  of Ann  13,  n,  pp  256-263 
anthracite  coal  fields  of,  description  and  production  of MR  1882,  pp  7-24 
atlas  sheets  of.     (See  p  92  of  this  bulletin.) 
bituminous  coal  field  in  Pennsylvania,  Ohio,  and  West  Virginia,  strati- 
graphy of Bull  65 
