﻿False 
  Atavism 
  215 
  

  

  and 
  in 
  other 
  cases 
  the 
  evidence 
  relied 
  upon 
  does 
  

   not 
  suffice 
  to 
  exclude 
  this 
  assumption. 
  Many 
  

   an 
  old 
  argument 
  has 
  of 
  late 
  lost 
  its 
  force 
  by 
  

   this 
  test. 
  

  

  Returning 
  to 
  our 
  starting 
  point 
  we 
  may 
  now 
  

   state 
  that 
  regular 
  reversions 
  to 
  a 
  specific 
  type 
  

   characterize 
  a 
  form 
  as 
  a 
  variety 
  of 
  that 
  species. 
  

   These 
  reversions, 
  however, 
  are 
  not 
  due 
  to 
  an 
  

   innate 
  tendency, 
  but 
  to 
  unobserved 
  spontaneous 
  

   crosses. 
  

  

  