﻿Monstrosities 
  417 
  

  

  having 
  two 
  separate 
  apices, 
  but 
  not 
  always* 
  

   Such 
  seedlings 
  are 
  called 
  syncotyledonous 
  or 
  

   syncotyls. 
  Other 
  monstrosities 
  have 
  been 
  ob- 
  

   served 
  from 
  time 
  to 
  time, 
  but 
  need 
  not 
  be 
  men- 
  

   tioned 
  here. 
  

  

  It 
  is 
  evident 
  that 
  the 
  determination 
  of 
  the 
  

   hereditary 
  percentage 
  is 
  very 
  easy 
  in 
  tricotyl- 
  

   ous 
  or 
  syncotylous 
  cultures. 
  The 
  parent- 
  

   plants 
  must 
  be 
  carefully 
  isolated 
  while 
  bloom- 
  

   ing. 
  Many 
  species 
  pollinate 
  themselves 
  in 
  the 
  

   absence 
  of 
  bees; 
  from 
  these 
  the 
  insects 
  are 
  

   to 
  be 
  excluded. 
  Others 
  have 
  the 
  stamens 
  and 
  

   stigmas 
  widely 
  separated 
  and 
  have 
  to 
  be 
  polli- 
  

   nated 
  artificially. 
  Still 
  others 
  do 
  not 
  lend 
  them- 
  

   selves 
  to 
  such 
  operations, 
  but 
  have 
  to 
  be 
  left 
  free 
  

   to 
  the 
  visits 
  of 
  bees 
  and 
  of 
  humble-bees, 
  this 
  be- 
  

   ing 
  the 
  only 
  means 
  of 
  securing 
  seed 
  from 
  every 
  

   plant. 
  At 
  the 
  time 
  of 
  the 
  harvest 
  the 
  seeds 
  

   should 
  be 
  gathered 
  separately 
  from 
  each 
  plant, 
  

   and 
  this 
  precaution 
  should 
  also 
  be 
  observed 
  in 
  

   studies 
  of 
  the 
  hereditary 
  percentage 
  at 
  large, 
  

   and 
  in 
  all 
  scientific 
  pedigree-cultures. 
  Every 
  lot 
  

   of 
  seeds 
  is 
  to 
  be 
  sown 
  in 
  a 
  separate 
  pan, 
  and 
  care 
  

   must 
  be 
  taken 
  to 
  sow 
  such 
  quantities 
  that 
  three 
  

   to 
  four 
  hundred 
  seedlings 
  will 
  arise 
  from 
  each. 
  

   As 
  soon 
  as 
  they 
  display 
  their 
  cotyledons, 
  they 
  

   are 
  counted, 
  and 
  the 
  number 
  is 
  the 
  criterion 
  of 
  

   the 
  parent-plant. 
  Only 
  parent-plants 
  with 
  the 
  

   highest 
  percentages 
  are 
  selected, 
  and 
  out 
  of 
  

  

  