﻿VI 
  PREFACE. 
  

  

  leisure 
  to 
  pursue 
  them 
  farther, 
  and 
  to 
  

   test 
  the 
  results 
  arrived 
  at 
  by 
  our 
  

   growing 
  knowledge 
  in 
  the 
  sciences 
  

   which 
  bear 
  upon 
  the 
  early 
  condition 
  

   of 
  Mankind. 
  The 
  distinctions 
  here 
  

   taken 
  between 
  different 
  branches 
  of 
  

   the 
  subject, 
  have 
  not, 
  so 
  far 
  as 
  I 
  know, 
  

   been 
  elsewhere 
  laid 
  down 
  with 
  adequate 
  

   precision. 
  Yet 
  all 
  safe 
  reasoning 
  depends 
  

   upon 
  such 
  distinctions 
  being 
  carefully 
  

   observed. 
  If 
  they 
  are 
  sound, 
  they 
  place 
  

   an 
  insuperable 
  bar 
  in 
  the 
  way 
  of 
  cer- 
  

   tain 
  conclusions 
  respecting 
  Primeval 
  Man, 
  

   which 
  have 
  been 
  too 
  hastily 
  assumed 
  

   as 
  following 
  from 
  recently 
  discovered 
  

   facts. 
  At 
  all 
  events 
  these 
  conclusions 
  

  

  