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  result, 
  having 
  the 
  new 
  attribute 
  in 
  addition 
  to 
  

   all 
  the 
  variability 
  of 
  the 
  old 
  types. 
  In 
  scientific 
  

   experiments 
  made 
  for 
  the 
  purpose 
  of 
  investi- 
  

   gating 
  the 
  general 
  laws 
  of 
  hybridity, 
  such 
  com- 
  

   plex 
  cases 
  are 
  therefore 
  to 
  be 
  wholly 
  excluded. 
  

   The 
  hereditary 
  purity 
  of 
  the 
  parents 
  must 
  be 
  

   considered 
  as 
  one 
  of 
  the 
  first 
  conditions 
  of 
  

   success. 
  

  

  Moreover 
  the 
  progeny 
  must 
  be 
  numerous, 
  

   since 
  neither 
  constancy, 
  nor 
  the 
  exact 
  propor- 
  

   tions 
  in 
  the 
  case 
  of 
  instability, 
  can 
  be 
  deter- 
  

   mined 
  with 
  a 
  small 
  lot 
  of 
  plants. 
  

  

  Finally, 
  and 
  in 
  order 
  to 
  come 
  to 
  a 
  definite 
  

   choice 
  of 
  research 
  material, 
  we 
  should 
  keep 
  in 
  

   mind 
  that 
  the 
  chief 
  object 
  is 
  to 
  ascertain 
  the 
  

   relation 
  of 
  the 
  offspring 
  to 
  their 
  parents. 
  Now 
  

   in 
  nearly 
  all 
  cases 
  the 
  seeds 
  are 
  separated 
  from 
  

   the 
  fruits 
  and 
  from 
  one 
  another, 
  before 
  it 
  be- 
  

   comes 
  possible 
  to 
  judge 
  of 
  their 
  qualities. 
  One 
  

   may 
  open 
  a 
  fruit 
  and 
  count 
  the 
  seeds, 
  but 
  ordi- 
  

   narily 
  nothing 
  is 
  noted 
  as 
  to 
  their 
  characters. 
  

   In 
  this 
  respect 
  no 
  other 
  plant 
  equals 
  the 
  corn 
  

   or 
  maize, 
  as 
  the 
  kernels 
  remain 
  together 
  on 
  the 
  

   spike, 
  and 
  as 
  it 
  has 
  more 
  than 
  one 
  variety 
  

   characterized 
  by 
  the 
  color, 
  or 
  constitution, 
  or 
  

   other 
  qualities 
  of 
  the 
  grains. 
  A 
  corn-grain, 
  

   however, 
  is 
  not 
  a 
  seed, 
  but 
  a 
  fruit 
  containing 
  a 
  

   seed. 
  Hence 
  the 
  outer 
  parts 
  pertain 
  to 
  the 
  par- 
  

   ent 
  plant 
  and 
  only 
  the 
  innermost 
  ones 
  to 
  the 
  

  

  