﻿112 
  

  

  and 
  placed 
  in 
  a 
  cold 
  room 
  so 
  that 
  further 
  grafting 
  or 
  budding 
  

   of 
  these 
  varieties 
  may 
  be 
  made 
  next 
  year. 
  

  

  Nursery 
  trees 
  of 
  the 
  Franquette, 
  Pomeroy, 
  Parisienne 
  and 
  

   unidentified 
  others, 
  on 
  their 
  own 
  roots 
  are 
  making 
  a 
  pitiable 
  

   effort 
  at 
  successful 
  growth, 
  while 
  all 
  wood 
  on 
  the 
  black 
  stock 
  

   is 
  making 
  excellent 
  growth. 
  

  

  In 
  one 
  instance 
  the 
  wood 
  of 
  Mayquette 
  a 
  cross 
  between 
  

   Mayette 
  and 
  Franquette 
  formed 
  two 
  nutlets. 
  Lack 
  of 
  pollen 
  

   was 
  all 
  that 
  prevented 
  the 
  fruiting 
  of 
  one-year-old 
  grafted 
  trees. 
  

   A 
  splendid 
  point 
  for 
  the 
  unit 
  orchard 
  booster, 
  but 
  a 
  point 
  of 
  no 
  

   value 
  to 
  the 
  real 
  walnut 
  grower. 
  

  

  CROSS 
  FERTILIZATION 
  

  

  Owing 
  to 
  the 
  very 
  vigorous 
  weather 
  of 
  the 
  past 
  winter 
  the 
  

   catkins 
  on 
  the 
  older 
  Persians 
  at 
  Arlington 
  Farm 
  were 
  killed. 
  

   In 
  order 
  to 
  study 
  the 
  conduct 
  and 
  product 
  of 
  these 
  trees 
  we 
  

   sought 
  pollen 
  elsewhere 
  to 
  fertilize 
  their 
  liberal 
  display 
  of 
  pistils. 
  

   We 
  were 
  successful 
  in 
  obtaining 
  some 
  from 
  the 
  trees 
  of 
  Messrs. 
  

   Killen 
  and 
  Rosa, 
  and 
  Miss 
  Lea, 
  but 
  though 
  this 
  and 
  some 
  pollen 
  

   of 
  black, 
  butternut 
  and 
  the 
  Japanese 
  was 
  used 
  no 
  pollenation 
  

   was 
  successful. 
  

  

  In 
  the 
  case 
  of 
  sieboldiana, 
  however, 
  we 
  succeeded 
  in 
  secur- 
  

   ir.g 
  what 
  appears 
  to 
  be 
  fruit 
  of 
  certain 
  definite 
  cross- 
  fertilization, 
  

   as 
  sieboldiana 
  x 
  nigra; 
  sieboldiana 
  x 
  cinerea 
  and 
  possibly 
  sie- 
  

   boldiana 
  X 
  regia. 
  

  

  Only 
  in 
  one 
  instance 
  did 
  the 
  nuts 
  appear 
  to 
  have 
  other 
  than 
  

   the 
  usual 
  characters 
  of 
  sieboldiana. 
  

  

  The 
  nuts 
  of 
  the 
  cinerea 
  cross 
  were 
  longer, 
  more 
  tubular 
  and 
  

   Ecmewhat 
  deeper 
  furrowed 
  and 
  darker. 
  

  

  Unfortunately 
  some 
  conflicting 
  results 
  in 
  the 
  fruiting 
  of 
  the 
  

   sieboldiana 
  places 
  the 
  possible 
  cross-fruits 
  under 
  a 
  cloud. 
  

  

  A 
  peculiarity 
  of 
  the 
  blossoming 
  of 
  the 
  sieboldiana 
  at 
  Arling- 
  

   ton 
  this 
  year 
  was 
  that 
  the 
  stamens 
  and 
  pistils 
  of 
  an 
  individual 
  

   tree 
  opened 
  at 
  dates 
  of 
  six 
  to 
  ten 
  days 
  apart, 
  and 
  with 
  the 
  tree 
  

   used 
  for 
  crossing 
  the 
  catkins 
  were 
  all 
  off 
  before 
  the 
  pistils 
  opened. 
  

   As 
  no 
  two 
  trees 
  are 
  near 
  together, 
  perhaps 
  two 
  to 
  three 
  hundred 
  

   feet 
  being 
  the 
  closest, 
  natural 
  cross-pollenating 
  was 
  not 
  expected. 
  

   However, 
  after 
  the 
  cross-pollenations 
  by 
  hand 
  were 
  made 
  and 
  

   fruits 
  set, 
  and 
  even 
  matured, 
  it 
  was 
  found 
  that 
  some 
  clusters 
  

   had 
  from 
  one 
  to 
  three 
  more 
  nuts 
  than 
  were 
  hand 
  treated. 
  Many 
  

   of 
  the 
  clusters 
  had 
  less 
  nuts 
  than 
  the 
  number 
  of 
  pistils 
  treated, 
  

   which 
  was 
  to 
  be 
  expected. 
  

  

  