﻿14 
  

  

  we 
  get 
  at 
  the 
  grocery 
  store. 
  It 
  is 
  best 
  to 
  pull 
  off 
  the 
  unde- 
  

   veloped 
  male 
  flowers 
  if 
  they 
  happen 
  to 
  be 
  on 
  the 
  same 
  branch 
  

   with 
  the 
  female 
  flowers, 
  and 
  then 
  place 
  the 
  bags 
  over 
  the 
  female 
  

   flowers 
  at 
  about 
  the 
  time 
  when 
  t-hey 
  blossom, 
  in 
  advance 
  of 
  

   pollination 
  of 
  the 
  male 
  flowers. 
  It 
  is 
  not 
  safe 
  to 
  depend 
  upon 
  

   pulling 
  off 
  the 
  male 
  flowers 
  of 
  an 
  isolated 
  tree 
  and 
  leaving 
  the 
  

   female 
  flowers 
  without 
  bags 
  to 
  protect 
  them 
  from 
  pollen 
  of 
  the 
  

   same 
  species 
  or 
  of 
  allied 
  species, 
  for 
  the 
  reason 
  that 
  wind 
  may 
  

   carry 
  pollen 
  to 
  a 
  great 
  distance. 
  One 
  of 
  Mr. 
  Burbank's 
  critics 
  — 
  

   I 
  am 
  sorry 
  he 
  has 
  so 
  many, 
  for 
  they 
  are 
  not 
  all 
  honest 
  or 
  serious 
  — 
  

   one 
  of 
  his 
  critics, 
  in 
  relation 
  to 
  the 
  crossing 
  of 
  walnuts, 
  said 
  

   that 
  it 
  was 
  due 
  to 
  no 
  particular 
  skill 
  on 
  the 
  part 
  of 
  Mr. 
  Bur- 
  

   bank, 
  for, 
  whenever 
  the 
  wind 
  blew 
  from 
  the 
  east, 
  he 
  regretted 
  

   to 
  say 
  that 
  his 
  entire 
  orchard 
  of 
  Persian 
  walnuts 
  became 
  pol- 
  

   Hnized 
  from 
  the 
  California 
  black 
  walnuts 
  nearly 
  half 
  a 
  mile 
  

   away. 
  This 
  is 
  an 
  exaggeration, 
  because 
  the 
  chances 
  are 
  that 
  

   most 
  of 
  the 
  Persian 
  walnuts 
  were 
  pollenized 
  from 
  their 
  own 
  

   pollen, 
  but 
  in 
  the 
  case 
  of 
  some 
  Persian 
  walnuts 
  blossoming 
  early, 
  

   and 
  developing 
  female 
  flowers 
  in 
  advance 
  of 
  male 
  flowers, 
  pollen 
  

   might 
  be 
  carried 
  to 
  them 
  from 
  half 
  a 
  mile 
  away 
  in 
  a 
  high 
  wind 
  

   from 
  California 
  black 
  walnut 
  trees. 
  Black 
  walnut 
  pollen 
  would 
  

   then 
  fertilize 
  pistillate 
  flowers 
  of 
  the 
  Persian 
  walnut. 
  I 
  have 
  

   found 
  this 
  a 
  real 
  danger, 
  this 
  danger 
  of 
  wind-pollination 
  at 
  a 
  

   distance, 
  much 
  to 
  my 
  surprise. 
  Last 
  year 
  I 
  pollinized 
  one 
  or 
  

   two 
  lower 
  branches 
  of 
  female 
  flowers 
  of 
  a 
  butternut 
  tree 
  which 
  

   had 
  no 
  other 
  butternut 
  tree 
  within 
  a 
  distance 
  of 
  a 
  good 
  many 
  

   rods, 
  so 
  far 
  away 
  that 
  I 
  had 
  no 
  idea 
  that 
  the 
  pollen 
  would 
  be 
  

   carried 
  from 
  the 
  tree 
  with 
  male 
  flowers 
  to 
  the 
  one 
  which 
  hap- 
  

   pened 
  to 
  have 
  female 
  flowers 
  only 
  that 
  year; 
  consequently 
  I 
  

   placed 
  pecan 
  pollen 
  on 
  the 
  female 
  flowers 
  of 
  the 
  lower 
  branches 
  

   of 
  this 
  butternut 
  tree 
  without 
  protecting 
  them 
  with 
  bags, 
  and 
  

   left 
  the 
  rest 
  of 
  the 
  tree 
  unguarded. 
  There 
  were 
  no 
  male 
  flowers 
  

   on 
  that 
  butternut 
  tree 
  that 
  year. 
  Much 
  to 
  my 
  surprise, 
  not 
  

   only 
  my 
  pollinized 
  flowers 
  but 
  the 
  whole 
  tree 
  bore 
  a 
  good 
  crop 
  

   of 
  butternuts. 
  This 
  year, 
  on 
  account 
  of 
  the 
  drought, 
  many 
  of 
  

   the 
  hickory 
  trees 
  bore 
  female 
  flowers 
  only. 
  I 
  do 
  not 
  know 
  that 
  

   it 
  was 
  on 
  account 
  of 
  the 
  drought, 
  but 
  I 
  have 
  noted 
  that 
  after 
  

   seasons 
  of 
  drought, 
  trees 
  are 
  apt 
  to 
  bear 
  flowers 
  of 
  one 
  sex 
  of 
  

   the 
  other, 
  trees 
  which 
  normally 
  bear 
  flowers 
  of 
  both 
  sexes. 
  This 
  

   year 
  a 
  number 
  of 
  hickory 
  trees 
  bore 
  flowers 
  of 
  one 
  sex 
  only, 
  

   and 
  I 
  noted 
  that 
  some 
  shagbark 
  trees 
  which 
  had 
  no 
  male 
  flowers 
  

   had 
  fairly 
  good 
  crops 
  of 
  nuts 
  from 
  pollen 
  blown 
  from 
  a 
  distance 
  

  

  