﻿REPORT 
  OF 
  THE 
  DIRECTOR 
  r31 
  

  

  130 
  B 
  24—31 
  ; 
  — 
  Zone 
  of 
  Tsotelus 
  gigas 
  and 
  Lingula 
  curta 
  

  

  Monticuliporidae 
  Strophomena 
  incurvata 
  

  

  Calymene 
  senaria 
  Ctenodonta 
  duhia 
  

  

  Dilinanella 
  testudinar'ia 
  Ctenodonta 
  levata 
  

  

  Dahnanella 
  suhaequata 
  liafinesguina 
  alternata 
  

  

  Orthoceras 
  vertebrale 
  Rajinesquina 
  deltoidea 
  

  

  Protowarthia 
  cancellata 
  Diplograjptus 
  arnplexicaulis 
  

  

  46 
  feet 
  

   The 
  section 
  thus 
  far 
  is 
  continuous. 
  Above 
  this, 
  beds, 
  presum- 
  

   ably 
  of 
  about 
  three 
  feet 
  in 
  thickness, 
  are 
  invisible. 
  Following 
  this, 
  

   appears 
  

  

  130 
  B 
  32 
  ; 
  — 
  Hard 
  black, 
  impure 
  limestone 
  in 
  thin 
  layers, 
  often 
  

   encrinal. 
  This 
  forms 
  the 
  fall 
  near 
  the 
  stone 
  bridge 
  and 
  the 
  

   bed 
  of 
  the 
  brook 
  above 
  it 
  to 
  the 
  branch. 
  Stroj)hoinena 
  incurvata 
  

   occurs 
  in 
  the 
  lower 
  ])art. 
  Abundant 
  large 
  Isotelus 
  gigas 
  

   throughout, 
  also 
  Orthoceras 
  proteiforme^ 
  the 
  latter 
  very 
  abund- 
  

   ant 
  in 
  the 
  upper 
  part. 
  40 
  feet 
  

  

  130 
  B 
  33 
  ; 
  — 
  The 
  succeeding 
  layers 
  are 
  again 
  covered 
  for 
  some 
  dis- 
  

   tance. 
  On 
  the 
  north 
  branch 
  then 
  appears 
  9 
  feet 
  of 
  sandy, 
  thin- 
  

   bedded, 
  gray, 
  finely 
  crystalline 
  limestone, 
  containing 
  no 
  fossils 
  

   except 
  comminuted 
  crinoids 
  and 
  trilobites. 
  An 
  outcrop 
  of 
  

   the 
  same 
  rock, 
  11 
  feet 
  thick, 
  occurs 
  on 
  the 
  south 
  branch. 
  Both 
  

   branches 
  rise 
  in 
  swamps 
  without 
  further 
  outcrops. 
  

  

  West 
  Canada 
  creek 
  section 
  — 
  Prospect. 
  At 
  the 
  suggestion 
  of 
  

   Prof. 
  C. 
  S. 
  Prosser, 
  the 
  writer 
  remeasured 
  the 
  Trenton 
  Falls 
  

   section 
  (described 
  on 
  p. 
  76-80 
  White 
  '96) 
  and 
  discovered 
  an 
  error 
  

   of 
  33 
  feet 
  in 
  beds 
  12-13, 
  caused 
  in 
  transcribing 
  partially 
  oblit- 
  

   erated 
  figures 
  in 
  the 
  note 
  book 
  of 
  the 
  previous 
  visit. 
  

  

  Beds 
  i30 
  D 
  1-4 
  are 
  repeated 
  in 
  D 
  5-7 
  so 
  that 
  the 
  total 
  thickness 
  

   of 
  the 
  Trenton 
  Falls 
  section 
  is 
  268 
  instead 
  of 
  .^25 
  feet.'* 
  

  

  The 
  dip 
  of 
  the 
  strata 
  changes 
  quite 
  abruptly 
  at 
  Prospect 
  : 
  the 
  

   upper 
  end 
  of 
  the 
  gorge 
  section. 
  Below 
  the 
  quarries, 
  as 
  seen 
  from 
  

   the 
  bridge, 
  ic 
  is 
  20° 
  N. 
  Beneath 
  the 
  bridge 
  it 
  is 
  10° 
  S, 
  around 
  the 
  

  

  a 
  Since 
  the 
  above 
  was 
  written. 
  Prof. 
  Prosser's 
  paper 
  has 
  appeared, 
  in 
  which 
  luy 
  cor- 
  

   rected 
  figures 
  are 
  given 
  (Prosser 
  98, 
  p. 
  62o) 
  together 
  with 
  his 
  own 
  calculations 
  of 
  the 
  Trenton 
  

   Falls 
  section, 
  which 
  differ 
  by 
  only 
  two 
  feet. 
  In 
  neither 
  of 
  the 
  sections 
  described 
  by 
  Prosser 
  

   and 
  Cumings 
  was 
  a 
  complete 
  series 
  of 
  the 
  entire 
  Trenton 
  group 
  secured. 
  

  

  