﻿526 
  Mutations 
  

  

  of 
  the 
  wild 
  locality 
  in 
  the 
  garden. 
  A 
  third 
  

   and 
  last 
  method 
  of 
  getting 
  still 
  more 
  new 
  spe- 
  

   cies 
  from 
  the 
  original 
  strain, 
  was 
  the 
  repetition 
  

   of 
  the 
  sowing 
  process, 
  by 
  saving 
  and 
  sowing 
  

   the 
  seed 
  which 
  ripened 
  on 
  the 
  introduced 
  

   plants. 
  These 
  various 
  methods 
  have 
  led 
  to 
  the 
  

   discovery 
  of 
  over 
  a 
  dozen 
  new 
  types, 
  never 
  pre- 
  

   viously 
  observed 
  or 
  described. 
  

  

  Leaving 
  the 
  physiologic 
  side 
  of 
  the 
  rela- 
  

   tions 
  of 
  these 
  new 
  forms 
  for 
  the 
  next 
  lecture, 
  

   it 
  would 
  be 
  profitable 
  to 
  give 
  a 
  short 
  descrip- 
  

   tion 
  of 
  the 
  several 
  novelties. 
  To 
  this 
  end 
  they 
  

   may 
  be 
  combined 
  under 
  five 
  different 
  heads, 
  ac- 
  

   cording 
  to 
  their 
  systematic 
  value. 
  The 
  first 
  

   head 
  includes 
  those 
  which 
  are 
  evidently 
  to 
  be 
  

   considered 
  as 
  varieties, 
  in 
  the 
  narrower 
  sense 
  

   of 
  the 
  word, 
  as 
  previously 
  given. 
  The 
  second 
  

   and 
  third 
  heads 
  indicate 
  the 
  real 
  progressive 
  

   elementary 
  species, 
  first 
  those 
  which 
  are 
  as 
  

   strong 
  as 
  the 
  parent-species, 
  and 
  secondly 
  a 
  

   group 
  of 
  weaker 
  types, 
  apparently 
  not 
  destined 
  

   to 
  be 
  successful. 
  Under 
  the 
  fourth 
  head 
  I 
  shall 
  

   include 
  some 
  inconstant 
  forms, 
  and 
  under 
  the 
  

   last 
  head 
  those 
  that 
  are 
  organically 
  incomplete. 
  

  

  Of 
  varieties 
  with 
  a 
  negative 
  attribute, 
  or 
  real 
  

   retrograde 
  varieties, 
  I 
  have 
  found 
  three, 
  all 
  of 
  

   them 
  in 
  a 
  flowering 
  condition 
  in 
  the 
  field. 
  I 
  

   have 
  given 
  them 
  the 
  names 
  of 
  laevifolia, 
  brevi- 
  

   stylis 
  and 
  nanella. 
  

  

  