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  able 
  to 
  keep 
  such 
  boxes 
  scattered 
  about 
  in 
  so 
  many 
  places. 
  She 
  

   had 
  put 
  them 
  all 
  neatly 
  together 
  in 
  a 
  closet 
  on 
  one 
  shelf, 
  and 
  there 
  

   was 
  none 
  of 
  the 
  pollen 
  that 
  I 
  could 
  use, 
  because 
  the 
  wind 
  had 
  mixed 
  

   the 
  kinds 
  all 
  up. 
  I 
  had 
  eight 
  kinds 
  of 
  pollen 
  across 
  which 
  one 
  kind 
  

   of 
  wind 
  had 
  blown. 
  

  

  There 
  is 
  one 
  practical 
  point 
  in 
  cross 
  pollenizing 
  flowers 
  that 
  I 
  

   have 
  recently 
  learned. 
  Pollen 
  of 
  one 
  variety 
  may 
  not 
  combine 
  

   with 
  the 
  ovule 
  of 
  another 
  variety 
  or 
  species 
  but 
  may 
  stimulate 
  the 
  

   ovule 
  to 
  go 
  on 
  and 
  develop 
  all 
  alone, 
  without 
  taking 
  to 
  itself 
  the 
  

   added 
  pollen. 
  That 
  is 
  a 
  very 
  important 
  point, 
  and 
  possibly 
  a 
  new 
  

   point. 
  I 
  was 
  deceived, 
  and 
  reported 
  that 
  I 
  had 
  crosses 
  of 
  certain 
  

   trees, 
  and 
  that 
  such 
  hybrids 
  were 
  growing. 
  I 
  knew 
  that 
  the 
  

   flowers 
  of 
  parent 
  trees 
  had 
  been 
  properly 
  protected 
  from 
  their 
  

   own 
  pollen. 
  Now 
  when 
  these 
  young 
  trees 
  are 
  two 
  years 
  of 
  age, 
  I 
  

   find 
  they 
  are 
  true 
  to 
  one 
  parent 
  type; 
  so 
  true 
  that 
  they 
  are 
  evidently 
  

   not 
  hybrids. 
  They 
  have 
  developed 
  from 
  the 
  pistillate 
  parent 
  only. 
  

   In 
  ordinary 
  parthenogenesis 
  the 
  fruit 
  grows 
  without 
  any 
  pollen 
  

   influence 
  at 
  all. 
  This 
  forced 
  parthenogenesis 
  whichi 
  have 
  described 
  

   seems 
  to 
  be 
  a 
  phenomenon 
  with 
  which 
  botanists 
  are 
  unfamiliar. 
  

   Until 
  I 
  learn 
  that 
  it 
  has 
  been 
  described 
  and 
  named 
  by 
  others 
  I 
  

   shall 
  call 
  it 
  Allergic 
  Parthenogenesis 
  (Alios, 
  ergon). 
  The 
  pistillate 
  

   flowers 
  accept 
  absolutely 
  no 
  pollen, 
  but 
  go 
  on 
  and 
  develop 
  because 
  

   of 
  its 
  impulse 
  given. 
  In 
  cross 
  pollenizing 
  flowers, 
  I 
  find 
  one 
  point 
  

   of 
  great 
  practical 
  consequence. 
  When 
  covering 
  the 
  female 
  flowers 
  

   with 
  paper 
  bags 
  to 
  protect 
  them 
  from 
  their 
  own 
  pollen 
  you 
  give 
  

   protection 
  to 
  a 
  great 
  number 
  of 
  insects. 
  The 
  insects 
  remain 
  inside 
  

   these 
  bags 
  and 
  destroy 
  the 
  leaves 
  and 
  flowers. 
  They 
  are 
  protected 
  

   there 
  from 
  their 
  enemies, 
  predatory 
  insects 
  and 
  the 
  birds. 
  When 
  

   the 
  bags 
  are 
  taken 
  ofT, 
  perhaps 
  a 
  week 
  later, 
  for 
  the 
  purpose 
  of 
  

   adding 
  pollen 
  to 
  pistillate 
  flowers, 
  insects 
  may 
  have 
  destroyed 
  the 
  

   leaves 
  and 
  even 
  the 
  flowers. 
  Consequently, 
  I 
  find 
  it 
  best 
  to 
  sprinkle 
  

   the 
  leaves 
  with 
  Persian 
  insect 
  powder 
  and 
  to 
  put 
  some 
  of 
  it 
  in 
  the 
  

   bags 
  that 
  are 
  to 
  cover 
  the 
  flowers. 
  Insects 
  can't 
  live 
  in 
  an 
  atmos- 
  

   phere 
  of 
  this 
  insect 
  powder. 
  They 
  sneeze 
  themselves 
  to 
  death. 
  

   I 
  have 
  taken 
  the 
  bags 
  from 
  leaves 
  and 
  flowers 
  which 
  were 
  so 
  badly 
  

   injured 
  by 
  insects 
  you 
  could 
  distinguish 
  them 
  at 
  a 
  considerable 
  dis- 
  

   tance. 
  These 
  are 
  all 
  the 
  points 
  that 
  I 
  jotted 
  down 
  for 
  this 
  address 
  

   today, 
  but 
  no 
  doubt 
  many 
  other 
  points 
  will 
  be 
  brought 
  out 
  in 
  the 
  

   subsequent 
  discussion. 
  

  

  Mr. 
  McCoy: 
  I 
  would 
  like 
  to 
  inquire 
  how 
  far 
  it 
  is 
  possible 
  under 
  

   a 
  microscopic 
  examination 
  to 
  determine 
  the 
  species 
  of 
  the 
  pollen. 
  

  

  Dr. 
  Morris: 
  It 
  is 
  possible 
  to 
  determine 
  the 
  species 
  but 
  not 
  

  

  