﻿INDEX 
  

  

  Page. 
  

  

  Acondylacanthus 
  241 
  

  

  Mudgiamis 
  244 
  

  

  nuperus 
  242 
  

  

  rectus 
  241 
  ' 
  

  

  xiphias 
  244 
  

  

  Acrocrinus 
  343 
  

  

  Wortheni 
  343 
  

  

  Agassizocrinus 
  315 
  

  

  hemisphericus 
  316 
  

  

  papillatus 
  315 
  

  

  Agelacrinoidea 
  335 
  

  

  Alumina 
  40 
  

  

  Allageerinus 
  341 
  

  

  Carp 
  enteri 
  — 
  341 
  

  

  Ancient 
  soils 
  23 
  

  

  Anticlinal 
  axis 
  39, 
  41 
  

  

  Archfeocidaris 
  337 
  

  

  " 
  Edgarensis 
  337 
  

  

  " 
  Illinoiensis 
  338 
  

  

  spino-clavatus 
  337 
  

  

  Area 
  of 
  Coal 
  Measures 
  in 
  Illinois 
  1 
  

  

  Artesian, 
  boring 
  

  

  " 
  at 
  Canton 
  5 
  

  

  at 
  Marsailles 
  50 
  

  

  " 
  atOlney 
  5,7,40 
  

  

  " 
  atStreator 
  40,49 
  

  

  Asteroidea 
  3B7 
  

  

  Asteroptyehius 
  248 
  

  

  tenellus 
  248 
  

  

  Atkinson, 
  coal 
  in 
  4 
  

  

  Aviculopecten 
  321 
  

  

  Varso 
  viensis 
  321 
  

  

  Batacanthus 
  253 
  

  

  " 
  necis 
  253 
  

  

  Battery 
  Bock 
  coal 
  3 
  

  

  Blastoides 
  346 
  

  

  Bloomington, 
  coal 
  in 
  4 
  

  

  Boring 
  for 
  coal 
  

  

  " 
  at 
  Chapin 
  32 
  

  

  Charleston, 
  section 
  of 
  29 
  

  

  Danville, 
  section 
  of 
  23 
  

  

  Farmer 
  City 
  16 
  

  

  