﻿Monstrosities 
  407 
  

  

  trived 
  to 
  isolate 
  three 
  groups 
  of 
  plants 
  by 
  the 
  

   use 
  of 
  parchment 
  bags, 
  covering 
  them 
  alter- 
  

   nately, 
  so 
  we 
  had 
  the 
  flowers 
  of 
  only 
  one 
  group 
  

   accessible 
  to 
  insects 
  on 
  any 
  day. 
  I 
  made 
  three 
  

   groups, 
  because 
  the 
  atavists 
  show 
  two 
  different 
  

   types. 
  Some 
  specimens 
  have 
  decussate 
  stems, 
  

   others 
  bear 
  all 
  their 
  leaves 
  in 
  whorls 
  of 
  three, 
  

   but 
  in 
  respect 
  to 
  the 
  hereditary 
  tendency 
  of 
  the 
  

   twisting 
  character 
  this 
  difference 
  does 
  not 
  seem 
  

   to 
  be 
  of 
  any 
  importance. 
  

  

  In 
  this 
  way 
  I 
  got 
  three 
  lots 
  of 
  seeds 
  and 
  sowed 
  

   enough 
  of 
  them 
  to 
  have 
  three 
  groups 
  of 
  plants 
  

   each 
  containing 
  about 
  150-200 
  well 
  developed 
  

   stems. 
  Among 
  these 
  I 
  counted 
  the 
  twisted 
  indi- 
  

   viduals, 
  and 
  found 
  nearly 
  the 
  same 
  numbers 
  for 
  

   all 
  three. 
  The 
  twisted 
  parents 
  gave 
  as 
  many 
  

   as 
  41$ 
  twisted 
  children, 
  but 
  the 
  decussate 
  ata- 
  

   vists 
  gave 
  even 
  somewhat 
  more, 
  viz., 
  44$, 
  while 
  

   the 
  ternate 
  specimens 
  gave 
  37$. 
  Obviously 
  the 
  

   divergencies 
  between 
  these 
  figures 
  are 
  too 
  slight 
  

   to 
  be 
  dwelt 
  upon, 
  the 
  fact 
  that 
  the 
  atavists 
  are 
  as 
  

   true 
  or 
  nearly 
  as 
  true 
  inheritors 
  of 
  the 
  twisted 
  

   race 
  as 
  the 
  best 
  selected 
  individuals 
  is 
  clearly 
  

   proved 
  by 
  this 
  experience. 
  

  

  It 
  is 
  evident 
  that 
  here 
  we 
  have 
  a 
  double 
  race, 
  

   including 
  two 
  types, 
  which 
  may 
  be 
  combined 
  in 
  

   different 
  degrees. 
  These 
  combinations 
  deter- 
  

   mine 
  a 
  wide 
  range 
  of 
  changes 
  in 
  the 
  stature 
  of 
  

   the 
  plants, 
  and 
  it 
  seems 
  hardly 
  right 
  to 
  use 
  the 
  

  

  