﻿484 
  Mutations 
  

  

  along 
  and 
  terminating 
  in 
  a 
  peloric 
  structure. 
  

  

  On 
  the 
  branches 
  these 
  anomalies 
  are 
  more 
  or 
  

   less 
  reduced, 
  according 
  to 
  the 
  strength 
  of 
  the 
  

   branch, 
  and 
  conforming 
  to 
  the 
  rule 
  of 
  perio- 
  

   dicity, 
  given 
  in 
  our 
  lecture 
  on 
  the 
  ' 
  ' 
  five-leaved 
  ' 
  ' 
  

   clover. 
  Through 
  all 
  this 
  diminution 
  the 
  peloric 
  

   type 
  remains 
  unchanged 
  and 
  therefore 
  becomes 
  

   so 
  much 
  the 
  purer, 
  the 
  weaker 
  the 
  branches 
  on 
  

   which 
  it 
  stands. 
  

  

  I 
  am 
  not 
  sure 
  whether 
  such 
  peloric 
  flowers 
  

   have 
  ever 
  been 
  purely 
  pollinated 
  and 
  their 
  seed 
  

   saved 
  separately, 
  but 
  I 
  have 
  often 
  observed 
  

   that 
  the 
  race 
  comes 
  pure 
  from 
  the 
  seed 
  of 
  the 
  

   zygomorphic 
  flowers. 
  It 
  is 
  as 
  yet 
  doubtful 
  

   whether 
  it 
  is 
  a 
  half 
  race 
  or 
  a 
  double 
  race, 
  and 
  

   whether 
  it 
  might 
  be 
  purified 
  and 
  strengthened 
  

   by 
  artificial 
  selection. 
  Perhaps 
  the 
  determina- 
  

   tion 
  of 
  the 
  hereditary 
  percentage 
  de- 
  

   scribed 
  when 
  dealing 
  with 
  the 
  tricotyls 
  might 
  

   give 
  the 
  clue 
  to 
  the 
  acquisition 
  of 
  a 
  higher 
  

   specialized 
  race. 
  The 
  variety 
  is 
  old 
  and 
  widely 
  

   disseminated, 
  but 
  must 
  be 
  subjected 
  to 
  quite 
  a 
  

   number 
  of 
  additional 
  experiments 
  before 
  it 
  can 
  

   be 
  said 
  to 
  be 
  sufficiently 
  understood. 
  

  

  The 
  most 
  widespread 
  peloric 
  variety 
  is 
  that 
  

   of 
  gloxinia. 
  It 
  has 
  erect 
  instead 
  of 
  drooping 
  

   flowers; 
  and 
  with 
  the 
  changed 
  position 
  the 
  

   structure 
  is 
  also 
  changed. 
  Like 
  other 
  pelories 
  

   it 
  has 
  five 
  equal 
  stamens 
  instead 
  of 
  four 
  un- 
  

  

  