﻿Theories 
  of 
  Evolution 
  31 
  

  

  ing 
  monstrosities 
  will 
  complete 
  the 
  general 
  plan. 
  

   The 
  second 
  subdivision 
  will 
  deal 
  with 
  the 
  origin 
  

   of 
  species 
  and 
  varieties 
  as 
  taught 
  by 
  experiment 
  

   and 
  observation, 
  treating 
  separately 
  the 
  sud- 
  

   den 
  variations 
  which 
  to 
  my 
  mind 
  do 
  produce 
  

   new 
  forms, 
  and 
  subsequently 
  the 
  fluctuations 
  

   which 
  I 
  hold 
  to 
  be 
  not 
  adequate 
  to 
  this 
  purpose. 
  

  

  