﻿I 
  N 
  DEX 
  

  

  The 
  superior 
  figures 
  tell 
  the 
  exact 
  place 
  on 
  the 
  page 
  in 
  ninths; 
  e. 
  g. 
  520* 
  

   means 
  page 
  520, 
  beginning 
  in 
  the 
  third 
  ninth 
  of 
  the 
  page, 
  i. 
  e. 
  about 
  one 
  

   third 
  of 
  the 
  way 
  down. 
  

  

  Abbey, 
  the, 
  543 
  6 
  . 
  

   Acidaspis 
  trentonensis, 
  526 
  1 
  . 
  

   Aeglina, 
  510 
  2 
  . 
  

  

  (rediviva 
  Barr?), 
  562 
  5 
  . 
  

   Agnostus, 
  510 
  2 
  , 
  562 
  5 
  . 
  

   Albany, 
  rural 
  cemetery, 
  528 
  2 
  -29*; 
  

  

  old 
  Dudley 
  observatory, 
  529 
  5 
  ; 
  

  

  penitentiary, 
  530 
  1 
  . 
  

   Ambonychia 
  radiata, 
  493 
  s 
  . 
  

  

  undulata, 
  502*. 
  

   Ami, 
  H. 
  M., 
  cited, 
  583 
  4 
  , 
  489 
  s 
  , 
  508 
  6 
  - 
  

  

  ll 
  1 
  , 
  528 
  7 
  , 
  546 
  7 
  , 
  562?, 
  5G6 
  7 
  , 
  567 
  2 
  . 
  

   Ampyx, 
  510 
  2 
  , 
  510\ 
  561 
  4 
  , 
  562 
  5 
  . 
  

   hastatus, 
  546 
  6 
  , 
  547 
  2 
  , 
  585 
  2 
  . 
  

   Annelida, 
  573 
  6 
  -74 
  9 
  . 
  

   Aparchites 
  minutissimus, 
  521 
  1 
  , 
  521 
  6 
  , 
  

  

  522 
  1 
  . 
  

   Archinacella 
  patelliformis, 
  516 
  2 
  , 
  

  

  516 
  8 
  , 
  520 
  6 
  , 
  525 
  3 
  , 
  526 
  6 
  , 
  527 
  5 
  . 
  

   Asaphus 
  platycephalus, 
  503 
  5 
  . 
  

  

  vetustus, 
  501 
  1 
  . 
  

   Ashburner, 
  C. 
  A., 
  cited, 
  583 
  4 
  , 
  560 
  8 
  . 
  

   Avicula 
  trentonensis, 
  502 
  4 
  . 
  

  

  Balanidae, 
  578°. 
  

  

  Barrande, 
  cited, 
  580 
  7 
  . 
  

  

  Batliyurus, 
  510 
  2 
  . 
  

  

  Beaver 
  park, 
  530 
  3 
  . 
  

  

  Beecher, 
  C. 
  E., 
  cited, 
  582 
  7 
  , 
  502 
  2 
  -3 
  2 
  , 
  

  

  525\ 
  526?, 
  529*, 
  564°. 
  

   Beekmantown 
  limestone, 
  544 
  7 
  . 
  

   Bellerophon 
  bilobatus, 
  499 
  8 
  , 
  500 
  2 
  , 
  

   502 
  5 
  , 
  520 
  6 
  , 
  525 
  s 
  , 
  527* 
  

   cancellatus, 
  493 
  6 
  , 
  502 
  3 
  . 
  

   Beyrichia 
  oculifera, 
  57.*)°. 
  

  

  Billings, 
  E., 
  cited, 
  581 
  s 
  , 
  494 
  2 
  . 
  

  

  Birdseye 
  limestone, 
  544 
  7 
  . 
  

  

  Bishop, 
  I. 
  P., 
  cited, 
  583\ 
  505 
  5 
  , 
  554 
  1 
  , 
  

  

  569 
  s 
  . 
  

   Black 
  creek, 
  Voorheesville, 
  531 
  4 
  -32' 
  J 
  . 
  

   Block 
  island, 
  Cohoes, 
  516 
  5 
  -17 
  1 
  . 
  

   Bollia, 
  545 
  2 
  . 
  

   Booth, 
  H., 
  cited, 
  582 
  7 
  . 
  

   Brachiopoda, 
  569 
  2 
  -72 
  2 
  . 
  

   Brothers's 
  quarry, 
  South 
  Troy, 
  535 
  3 
  - 
  

  

  37 
  1 
  . 
  

   Buttermilk 
  fall, 
  TVatervliet, 
  528 
  1 
  . 
  

   Bythotrephis 
  subnodosa, 
  499 
  8 
  , 
  500 
  s 
  . 
  

  

  CahilPs 
  hill, 
  South 
  Troy, 
  539*. 
  

   Caleiferous 
  sandstone, 
  544 
  7 
  . 
  

   Callopora, 
  547 
  3 
  . 
  

  

  ampla, 
  545 
  2 
  . 
  

  

  cf. 
  ampla, 
  544 
  3 
  . 
  

  

  multitabulata, 
  545 
  3 
  . 
  

   Calymmene 
  sp., 
  521 
  2 
  . 
  

  

  senaria, 
  50Q 
  6 
  , 
  tt\ 
  o2G 
  7 
  . 
  

   Camarella 
  hemiplicata, 
  505 
  2 
  . 
  

   Cameroceras 
  proteiforme, 
  olG 
  3 
  , 
  517 
  1 
  , 
  

  

  524 
  5 
  , 
  526 
  7 
  , 
  532 
  1 
  , 
  532 
  6 
  . 
  

   Canada, 
  graptolite 
  faunas, 
  508 
  s 
  . 
  

   Canadian 
  survey, 
  effect 
  on 
  correla- 
  

   tion 
  of 
  Hudson 
  river 
  shale, 
  4!)4 
  4 
  . 
  

   Cantonment 
  hill, 
  54G 
  9 
  . 
  

   Oarinaropeis 
  orbiculatus, 
  493°. 
  

  

  patelliformis, 
  l 
  ( 
  .'-">\ 
  

   Castleton, 
  Moordener 
  kill. 
  543*-44 
  s 
  . 
  

   Ceratocepnala 
  (Acidaspis) 
  trcnton- 
  

  

  ensis, 
  526 
  1 
  . 
  

   Ceratopsis, 
  575 
  8 
  . 
  

  

  