﻿31 
  

  

  have 
  the 
  after 
  fusion 
  in 
  which 
  you 
  are 
  going 
  to 
  have 
  proper 
  function 
  of 
  

   stock 
  and 
  scion. 
  

  

  Professor 
  Craig: 
  Each 
  cell 
  functions 
  after 
  its 
  own 
  kind. 
  It 
  is 
  a 
  

   question 
  of 
  passage 
  or 
  transmission 
  of 
  food 
  through 
  that 
  carrier, 
  after 
  

   the 
  union 
  is 
  effected. 
  If 
  the 
  character 
  of 
  the 
  two 
  types 
  differs 
  very 
  

   much, 
  the 
  transmission 
  of 
  food 
  is 
  checked 
  and 
  is 
  difficult. 
  

  

  President 
  Morris: 
  There 
  is 
  another 
  mechanical 
  point 
  I'd 
  like 
  to 
  

   ask 
  about. 
  When 
  the 
  two 
  types 
  of 
  cells 
  differ, 
  will 
  the 
  difference 
  in 
  

   degree 
  of 
  capillarity 
  regulate 
  the 
  amount 
  of 
  pabulum 
  distributed, 
  or 
  

   does 
  it 
  depend 
  upon 
  negative 
  and 
  positive 
  pressure? 
  

  

  Professor 
  Craig: 
  That 
  is 
  a 
  very 
  dilficult 
  question, 
  because 
  it 
  isn't 
  

   settled 
  at 
  the 
  present 
  time 
  what 
  credit 
  we 
  should 
  give 
  to 
  capillarity 
  

   and 
  what 
  to 
  root 
  pressure 
  in 
  sap 
  circulation. 
  

  

  Mr. 
  Reed 
  : 
  There 
  is 
  another 
  question 
  I 
  would 
  like 
  to 
  ask 
  Professor 
  

   Craig. 
  Supposing 
  you 
  have 
  a 
  mechanical 
  union 
  perfected, 
  what 
  is 
  the 
  

   difference 
  in 
  the 
  food 
  that 
  different 
  species 
  of 
  the 
  same 
  genus 
  transmit 
  ? 
  

   Has 
  that 
  been 
  worked 
  out? 
  

  

  Professor 
  Craig: 
  I 
  don't 
  think 
  so. 
  Of 
  course, 
  there 
  is 
  a 
  difference 
  

   in 
  the 
  food. 
  That 
  is 
  proven, 
  because 
  there 
  is 
  a 
  difference 
  in 
  the 
  quality 
  

   of 
  the 
  food. 
  The 
  tree 
  machine, 
  the 
  tree 
  factory 
  speaking 
  individually, 
  

   evidently 
  makes 
  different 
  products, 
  and 
  that 
  is 
  shown 
  by 
  the 
  different 
  

   quality 
  of 
  nuts. 
  That 
  is 
  all 
  we 
  know 
  about 
  it. 
  

  

  Professor 
  Lake 
  : 
  That 
  part 
  below 
  the 
  scion 
  still 
  continues 
  to 
  be 
  

   normal 
  hickory, 
  and 
  that 
  part 
  above, 
  pecan, 
  so 
  really 
  it 
  is 
  not 
  a 
  matter 
  

   of 
  distribution 
  of 
  water 
  supply 
  by 
  gravity 
  or 
  other 
  pressure, 
  but 
  rather 
  

   a 
  distribution 
  of 
  the 
  proper 
  amount 
  of 
  elaborated 
  food 
  ; 
  and 
  that 
  is 
  

   transmitted 
  through 
  the 
  cell 
  itself, 
  not 
  the 
  cell 
  walls. 
  Because 
  this 
  top 
  

   makes 
  a 
  food 
  that 
  is 
  different 
  from 
  the 
  normal 
  requirements, 
  or 
  because 
  

   the 
  latent 
  character 
  of 
  those 
  cells 
  below 
  does 
  not 
  respond 
  to 
  the 
  food 
  

   supply 
  as 
  actively 
  as 
  the 
  part 
  above, 
  is 
  the 
  whole 
  question, 
  it 
  seems 
  to 
  

   me. 
  If 
  the 
  cells 
  below 
  functioned 
  as 
  the 
  cells 
  above, 
  there 
  would 
  be 
  no 
  

   question 
  about 
  the 
  stock 
  and 
  scion 
  being 
  the 
  same. 
  

  

  Mr. 
  Littlepage 
  : 
  Of 
  course 
  there 
  must 
  be 
  sufficient 
  flow 
  of 
  sap 
  to 
  

   distribute 
  food. 
  The 
  hickory 
  root 
  might 
  not 
  send 
  the 
  flow 
  of 
  sap 
  as 
  

   fast 
  as 
  the 
  pecan 
  top 
  would 
  like. 
  

  

  Mr. 
  Heed: 
  Is 
  ]Mr. 
  Lake's 
  point 
  always 
  true, 
  that 
  the 
  stock 
  below 
  

   the 
  point 
  of 
  imion 
  remains 
  a 
  normal 
  hickory 
  ? 
  

  

  Professor 
  Craig: 
  I 
  don't 
  believe 
  there 
  are 
  more 
  than 
  one 
  or 
  two 
  

   exceptions 
  noted 
  to 
  that, 
  and 
  those 
  exceptions 
  are 
  recorded 
  under 
  graft 
  

   h^'brids. 
  

  

  Mr. 
  Reed 
  : 
  A 
  seedling 
  pecan 
  tree 
  owned 
  by 
  Mr. 
  B. 
  ]M. 
  Young 
  of 
  

   Morgan 
  City, 
  Louisiana, 
  was 
  top 
  worked 
  with 
  scions 
  from 
  the 
  McAl- 
  

   lister 
  hican 
  some 
  seven 
  or 
  eight 
  feet 
  above 
  ground, 
  and 
  later 
  on 
  the 
  bark 
  

  

  