﻿HISTORICAL 
  REVIEW 
  

  

  CONTENTS 
  

  

  PERIODS 
  OF 
  INVESTIGATIONS 
  

  

  First 
  Period 
  

  

  From 
  The 
  Earliest 
  Explorations 
  to 
  the 
  Year 
  1867 
  

  

  Page 
  Page 
  

  

  Earliest 
  explorers 
  11 
  Demeril 
  18 
  

  

  Coxe 
  II 
  Carpenter 
  18 
  

  

  Bartrain 
  12 
  Owen 
  19 
  

  

  Dunbar 
  12 
  Talcott 
  19 
  

  

  Stoddard 
  13 
  Jones 
  19 
  

  

  Darby 
  14 
  Lyell 
  19 
  

  

  Niittall 
  15 
  Dicksoji 
  and 
  Brown 
  20 
  

  

  Graham 
  15 
  Drake 
  ....21 
  

  

  Delafield 
  15 
  Ellet 
  21 
  

  

  Harlayi 
  16 
  Thomassy 
  21 
  

  

  Morton 
  17 
  Humphreys 
  and 
  Abbott 
  22 
  

  

  Co7irad. 
  18 
  Owe?i 
  23 
  

  

  Second 
  Period 
  

  

  Reconnaissance 
  Period, 
  1867-1892 
  

  

  Hilgard 
  23 
  Gabb 
  37 
  

  

  Hopkins 
  32 
  Johnson 
  37 
  

  

  Edwards 
  36 
  KjwwUoji 
  38 
  

  

  Hayes 
  36 
  Leidy 
  38 
  

  

  Forshey 
  37 
  

  

  Third 
  Period 
  

  

  Period 
  of 
  Work 
  Done 
  Under 
  the 
  Direction 
  of 
  the 
  

   Experiment 
  Stations 
  

  

  Lerch 
  39 
  Vatighan 
  42 
  

  

  Harris 
  41 
  Clendenin 
  43 
  

  

  Cope 
  42 
  Johnson 
  43 
  

  

  