﻿Balanced 
  Crosses 
  291 
  

  

  instance, 
  from 
  20 
  to 
  27$ 
  , 
  but 
  as 
  a 
  rule, 
  the 
  aver- 
  

   age 
  is 
  found 
  nearly 
  equal 
  to 
  25^. 
  

  

  The 
  sugary 
  kernels, 
  when 
  separated, 
  from 
  the 
  

   hybrid 
  spikes 
  and 
  sown 
  separately, 
  give 
  rise 
  to 
  

   a 
  pure 
  sugary 
  race, 
  in 
  no 
  degree 
  inferior 
  in 
  

   purity 
  to 
  the 
  original 
  variety. 
  But 
  the 
  starchy 
  

   kernels 
  are 
  of 
  different 
  types, 
  some 
  of 
  them 
  

   being 
  internally 
  like 
  the 
  hybrids 
  of 
  the 
  first 
  

   generation 
  and 
  others 
  like 
  the 
  original 
  parent. 
  

   To 
  decide 
  between 
  these 
  two 
  possibilities, 
  it 
  is 
  

   necessary 
  to 
  examine 
  their 
  progeny. 
  

  

  For 
  the 
  study 
  of 
  this 
  third 
  hybrid 
  generation 
  

   we 
  will 
  now 
  take 
  another 
  example, 
  the 
  opium- 
  

   poppies. 
  They 
  usually 
  have 
  a 
  dark 
  center 
  in 
  

   the 
  flowers, 
  the 
  inferior 
  parts 
  of 
  the 
  four 
  petals 
  

   being 
  stained 
  a 
  deep 
  purple, 
  or 
  often 
  nearly 
  

   black. 
  Many 
  varieties 
  exhibit 
  this 
  mark 
  as 
  a 
  

   large 
  black 
  cross 
  in 
  the 
  center 
  of 
  the 
  flower. 
  In 
  

   other 
  varieties 
  the 
  pigment 
  is 
  wanting, 
  the 
  cross 
  

   being 
  of 
  a 
  pure 
  white. 
  Obviously 
  it 
  is 
  only 
  re- 
  

   duced 
  to 
  a 
  latent 
  condition, 
  as 
  in 
  so 
  many 
  other 
  

  

  mi 
  

  

  cases 
  of 
  loss 
  of 
  color, 
  since 
  it 
  reappears 
  in 
  a 
  

   hybrid 
  with 
  the 
  parent-species. 
  

  

  For 
  my 
  crosses 
  I 
  have 
  taken 
  the 
  dark-centered 
  

   6 
  i 
  Mephisto 
  ' 
  ' 
  and 
  the 
  ' 
  ' 
  Danebrog, 
  ' 
  or 
  Danish 
  

   flag, 
  with 
  a 
  white 
  cross 
  on 
  a 
  red 
  field. 
  The 
  sec- 
  

   ond 
  year 
  the 
  hybrids 
  were 
  all 
  true 
  to 
  the 
  type 
  of 
  

   " 
  Mephisto. 
  " 
  From 
  the 
  seeds 
  of 
  each 
  artifi- 
  

   cially 
  self-fertilized 
  capsule, 
  one-fourth 
  (22.5^) 
  

  

  