﻿

  SEW 
  i'ORK 
  si 
  \ 
  i 
  i: 
  mi 
  si:i 
  m 
  

  

  ctlophora 
  carinata, 
  

   raptollt 
  ido-planktonic 
  

  

  ptolitbua 
  amplexlcaul 
  

  

  mucronatue 
  

   pric 
  

  

  ran 
  

  

  : 
  atulus. 
  

  

  een 
  [aland, 
  east 
  shore 
  of, 
  526P-27'; 
  

  

  north 
  - 
  

  

  ley, 
  i;. 
  EL, 
  cited, 
  583 
  . 
  iv,. 
  497^ 
  

   Sir, 
  53 
  t 
  . 
  • 
  . 
  :.):. 
  

  

  Guyot, 
  Arnold, 
  cited, 
  582 
  

  

  Hall, 
  James, 
  cited, 
  581 
  T 
  , 
  581\ 
  582 
  . 
  

   514P, 
  521 
  T 
  , 
  506 
  . 
  528 
  1 
  , 
  53 
  

  

  Helderberg 
  mountains, 
  outcrops 
  of 
  

  

  Lorraine 
  beds, 
  .~,is 
  e 
  . 
  

   Heterocrinna 
  heterodactylus, 
  r.iG 
  7 
  . 
  

  

  rmotome 
  cf. 
  gracilis, 
  529 
  . 
  

   Hov< 
  \ 
  . 
  P. 
  0., 
  cited, 
  5€ 
  

   Hudson 
  river 
  beds, 
  history, 
  1 
  

   190 
  -93 
  . 
  193 
  . 
  

   504 
  5*, 
  549 
  : 
  correlated 
  with 
  Lor- 
  

   raine 
  beds, 
  191*; 
  correlated 
  with 
  

   akfofl 
  slates, 
  192 
  . 
  198 
  ; 
  cor- 
  

   relation 
  with 
  Point 
  Levis 
  shales, 
  

   194"; 
  primordial 
  (Quebec) 
  age 
  of, 
  

   I94 
  T 
  ; 
  composite 
  character, 
  496 
  ; 
  

   ik 
  between 
  Hudson 
  valley 
  re- 
  

   1 
  and 
  Mohawk 
  valley, 
  504 
  ; 
  

   evidence 
  of 
  Trenton 
  age, 
  505 
  ; 
  cor 
  

   relation 
  with 
  Trenton 
  limestone, 
  

   ag 
  "ii 
  lower 
  Trenton 
  

   ,i 
  " 
  '■ 
  beds, 
  540 
  ; 
  Trenton 
  fos- 
  

  

  o, 
  549 
  : 
  four 
  zones, 
  5G0 
  .".1 
  . 
  

   xplanatlon 
  of 
  overturn 
  

   thickness, 
  5W; 
  

   In 
  the 
  Mohawk 
  rallej 
  buiu- 
  

  

  111:1 
  ry 
  of 
  paper, 
  567 
  6C 
  

   Hudson 
  river 
  group, 
  use 
  of 
  barm, 
  

   *'•" 
  - 
  192 
  I:.::. 
  198 
  

  

  term 
  dropped 
  by 
  Hall. 
  494"; 
  dis- 
  

   cussion 
  of 
  validity 
  of 
  term, 
  564*- 
  

   67 
  i 
  term 
  should 
  be 
  dropped, 
  ! 
  

   568 
  

   Hudson 
  river 
  shales, 
  use 
  of 
  term, 
  

   492 
  . 
  508P, 
  566 
  : 
  proposed 
  to 
  drop 
  

   term, 
  r>G8 
  8 
  . 
  

  

  Hudson 
  river 
  slate 
  group, 
  term, 
  

  

  49V. 
  

   Hyolithes 
  Bp. 
  ?, 
  502 
  . 
  

   americanus, 
  502 
  . 
  

  

  niaenus 
  crassicauda, 
  501 
  

  

  Indian 
  Ladder. 
  Lorraine 
  beds, 
  51S 
  S 
  . 
  

   [sotelus 
  gi 
  

  

  cf. 
  - 
  I45 
  1 
  . 
  

  

  James, 
  J. 
  T., 
  cited 
  

  

  Kenwood, 
  : 
  

  

  Kimball. 
  J. 
  P., 
  cited. 
  583', 
  5W. 
  

  

  Lansing-burg-, 
  north 
  end 
  of. 
  541 
  1 
  - 
  

   11' 
  : 
  Muff 
  above, 
  542 
  . 
  

  

  La 
  1 
  1 
  worth. 
  Charles, 
  cited, 
  583 
  1 
  , 
  5S4\ 
  

   D89 
  , 
  l 
  I'.iT'. 
  506 
  1 
  5*T, 
  

  

  562 
  567 
  1 
  . 
  

  

  Laslograptus 
  mucronatus, 
  ."»44 
  ? 
  . 
  

  

  Laveny's 
  point, 
  Waterford, 
  52 
  

  

  Lavery's 
  quarry, 
  535 
  7 
  . 
  

  

  Lepidocoleus 
  jamesi, 
  51V, 
  521 
  1 
  , 
  r,26 
  l 
  , 
  

   52( 
  Iption, 
  577-; 
  ex- 
  

  

  planation 
  of 
  plate. 
  r»S7 
  a 
  . 
  

  

  Leptaena 
  rugosa, 
  52 
  

  

  sericea, 
  r. 
  »i» 
  f 
  

  

  Bubtenta, 
  502*. 
  52! 
  

   Leptobolus 
  insignis, 
  515*, 
  520*, 
  ."21 
  4 
  , 
  

   524 
  . 
  524 
  . 
  529», 
  530*. 
  531 
  . 
  I 
  

   walcotti, 
  541», 
  569 
  ]»la 
  na- 
  

  

  tion 
  of 
  plate, 
  582 
  

   Leptograptus 
  Bubtenuis, 
  538*. 
  ~>i'A 
  . 
  

   Lingula 
  curta, 
  508?, 
  515 
  521« 
  

  

  Lingulops, 
  .",1 
  ;!»'. 
  

   Lophospira 
  bicincta, 
  52 
  

  

  uniangulata 
  var. 
  abbreviata, 
  

   525*, 
  526*. 
  

  

  