﻿584 
  Mutations 
  

  

  Intermediate 
  forms 
  have 
  not 
  been 
  met 
  with. 
  

   Some 
  slight 
  reversions 
  may 
  occur 
  in 
  the 
  autumn 
  

   on 
  the 
  smallest 
  and 
  weakest 
  lateral 
  branches. 
  

   Such 
  reversions, 
  however, 
  seem 
  to 
  be 
  very 
  rare, 
  

   as 
  I 
  have 
  tried 
  in 
  vain 
  to 
  produce 
  them 
  on 
  large 
  

   and 
  richly 
  branched 
  individuals, 
  by 
  applying 
  all 
  

   possible 
  inducements 
  in 
  the 
  form 
  of 
  manure 
  

   and 
  of 
  cutting, 
  to 
  stimulate 
  the 
  production 
  of 
  

   successive 
  generations 
  of 
  weaker 
  side 
  branches. 
  

  

  This 
  constancy 
  was 
  proved 
  by 
  the 
  experi- 
  

   ments 
  of 
  Solms-Laubach, 
  which 
  I 
  have 
  repeated 
  

   in 
  my 
  own 
  garden 
  during 
  several 
  years 
  with 
  

   seed 
  received 
  from 
  him. 
  No 
  atavists 
  or 
  deviat- 
  

   ing 
  specimens 
  have 
  been 
  found 
  among 
  many 
  

   hundreds 
  of 
  flowering 
  plants. 
  

  

  It 
  is 
  important 
  to 
  note 
  that 
  within 
  the 
  family 
  

   of 
  the 
  crucifers 
  the 
  form 
  of 
  the 
  capsule 
  and 
  the 
  

   attributes 
  of 
  the 
  valves 
  and 
  seeds 
  are 
  usually 
  

   considered 
  to 
  furnish 
  the 
  characteristics 
  of 
  

   genera, 
  and 
  this 
  point 
  has 
  been 
  elucidated 
  at 
  

   some 
  length 
  by 
  Solms-Laubach. 
  There 
  is, 
  how- 
  

   ever, 
  no 
  sufficient 
  reason 
  to 
  construe 
  a 
  new 
  

   genus 
  on 
  the 
  ground 
  of 
  Heeger's 
  globular- 
  

   fruited 
  shepherd's 
  purse; 
  but 
  as 
  a 
  true 
  elemen- 
  

   tary 
  species, 
  and 
  even 
  as 
  a 
  good 
  systematic 
  

   species 
  it 
  has 
  proved 
  itself, 
  and 
  as 
  such 
  it 
  is 
  de- 
  

   scribed 
  by 
  Solms-Laubach, 
  who 
  named 
  it 
  in 
  

   honor 
  of 
  its 
  discoverer. 
  

  

  Exactly 
  analogous 
  discoveries 
  have 
  been 
  

  

  