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  PRIMEVAL 
  MAN. 
  

  

  belong 
  to 
  the 
  science 
  of 
  Physiology. 
  Nature 
  

   is 
  her 
  own 
  interpreter, 
  and 
  her 
  evidence 
  is 
  

   clear. 
  Whatever 
  may 
  be 
  the 
  anatomical 
  

   difference 
  between 
  Man 
  and 
  the 
  Gorilla, 
  that 
  

   difference 
  is 
  the 
  equivalent, 
  in 
  physical 
  orga- 
  

   nization, 
  of 
  the 
  whole 
  mental 
  difference 
  between 
  

   a 
  Gorilla 
  and 
  a 
  Man. 
  This 
  is 
  the 
  measure 
  

   of 
  value 
  which 
  Nature 
  has 
  set 
  upon 
  the 
  kind 
  

   and 
  degree 
  of 
  divergence 
  which 
  separates 
  these 
  

   two 
  Material 
  Forms. 
  Any 
  other 
  measure 
  of 
  

   value 
  which 
  may 
  be 
  set 
  on 
  that 
  divergence 
  

   must 
  be 
  founded 
  on 
  an 
  arbitrary 
  and 
  partial 
  

   selection 
  among 
  the 
  facts 
  of 
  which 
  all 
  sound 
  

   classification 
  must 
  take 
  account. 
  Imperfect 
  

   as 
  all 
  existing 
  systems 
  of 
  classification 
  are, 
  

   they 
  are 
  not 
  so 
  bad 
  in 
  the 
  case 
  of 
  any 
  group 
  

   of 
  the 
  lower 
  animals 
  as 
  to 
  separate 
  organs 
  

  

  