﻿CONTENTS 
  

  

  PAGE 
  

  

  Preface 
  109 
  

  

  Part 
  1. 
  

  

  The 
  science 
  of 
  geology 
  and 
  its 
  history 
  113 
  

  

  Origin 
  of 
  the 
  earth 
  and 
  its 
  crust 
  114 
  

  

  Chemical 
  history 
  of 
  the 
  earth 
  117 
  

  

  Present 
  condition 
  of 
  the 
  earth's 
  interior 
  118 
  

  

  Envelopes 
  of 
  the 
  earth 
  119 
  

  

  Components 
  of 
  the 
  earth's 
  crust, 
  minerals 
  and 
  rocks 
  119 
  

  

  Minerals 
  120 
  

  

  Kocks 
  123 
  

  

  Historic 
  geology 
  126 
  

  

  Dynamic 
  geology 
  128 
  

  

  Palaeontology 
  129 
  

  

  Development 
  of 
  life 
  130 
  

  

  Physiography 
  and 
  structure 
  134 
  

  

  General 
  classification 
  of 
  geologic 
  time 
  and 
  strata 
  135 
  

  

  Part 
  2. 
  

  

  Geologic 
  formations 
  of 
  New 
  York 
  137 
  

  

  Synopsis 
  137 
  

  

  Archaean 
  138 
  

  

  Proterozoic 
  or 
  ao^notozoic 
  141 
  

  

  Palaeozoic 
  141 
  

  

  Mesozoic 
  170 
  

  

  Cenozoic 
  174 
  

  

  Present 
  surface 
  of 
  'New 
  York 
  179 
  

  

  