﻿502 
  J. 
  BHETLAND 
  FARMER 
  AND 
  J. 
  E. 
  S. 
  MOOIJE. 
  

  

  though 
  Ernst 
  himself 
  decides 
  in 
  favour 
  of 
  a 
  double 
  longi- 
  

   tudinal 
  fission, 
  we 
  feel 
  but 
  little 
  doubt 
  that 
  a 
  renewed 
  investi- 
  

   gation 
  will 
  show 
  that 
  the 
  chromosomes 
  ai'e 
  really 
  bivalent. 
  

   An 
  inspection 
  of 
  Fig. 
  5, 
  PI. 
  34, 
  of 
  his 
  memoir 
  strongly 
  supports 
  

   this 
  suspicion. 
  

  

  Montgomery,^ 
  in 
  a 
  series 
  of 
  papers 
  of 
  which 
  the 
  most 
  

   important 
  appeared 
  last 
  year, 
  describes 
  a 
  state 
  of 
  things 
  for 
  

   the 
  amphibia 
  investigated 
  by 
  him 
  which 
  is 
  in 
  complete 
  

   accord 
  with 
  the 
  conclusions 
  arrived 
  at 
  by 
  ourselves. 
  We 
  

   were 
  unaware 
  of 
  his 
  investigations 
  when 
  our 
  preliminary 
  note 
  

   was 
  published, 
  and 
  his 
  paper 
  only 
  came 
  into 
  our 
  hands 
  after- 
  

   wards. 
  It 
  is 
  gratifying, 
  however, 
  to 
  find 
  that 
  another 
  in- 
  

   vestigator, 
  working 
  quite 
  independently, 
  had 
  arrived 
  at 
  

   conclusions 
  precisel}'' 
  similar 
  to 
  those 
  which 
  our 
  own 
  extended 
  

   series 
  of 
  researches 
  on 
  critical 
  examples, 
  both 
  of 
  animals 
  and 
  

   plants, 
  had 
  led 
  us 
  to 
  adopt 
  as 
  a 
  general 
  interpretation 
  of 
  the 
  

   phenomena 
  of 
  reduction. 
  More 
  recently, 
  Williams, 
  in 
  working 
  

   out 
  the 
  cytology 
  of 
  the 
  reproductive 
  cells 
  in 
  Dictyota, 
  and 
  

   also 
  Gregory, 
  who 
  has 
  investigated 
  the 
  genesis 
  of 
  the 
  spores 
  

   of 
  a 
  number 
  of 
  ferns, 
  have 
  each 
  arrived 
  at 
  results 
  that 
  are 
  

   concordant 
  with 
  those 
  put 
  forward 
  by 
  us 
  in 
  the 
  paper 
  already 
  

   referred 
  to. 
  

  

  In 
  a 
  recent 
  paper 
  by 
  Jules 
  Berghs," 
  an 
  attempt 
  is 
  made 
  

   to 
  sustain 
  the 
  older 
  view 
  for 
  the 
  cases 
  of 
  Allium 
  fistulosum 
  

   and 
  L 
  ilium 
  Ian 
  ci 
  folium. 
  We 
  have 
  ourselves 
  examined 
  

   the 
  latter 
  plant, 
  and 
  we 
  are 
  quite 
  unable 
  to 
  concur 
  with 
  

   M. 
  Berghs' 
  conclusions. 
  We 
  readily 
  agree 
  with 
  him 
  that 
  it 
  

   is 
  entirely 
  a 
  ^^ 
  question 
  de 
  seriation," 
  but 
  we 
  cannot 
  

   agree 
  with 
  him 
  that 
  it 
  is 
  possible, 
  at 
  any 
  rate 
  except 
  in 
  most 
  

   exceptional 
  cases, 
  in 
  one 
  anther 
  lobe 
  to 
  obtain 
  anything 
  

   approaching 
  to 
  complete 
  seriation 
  of 
  the 
  stages 
  to 
  be 
  found 
  

   in 
  a 
  single 
  loculus. 
  It 
  is 
  indeed 
  just 
  to 
  his 
  assumption 
  of 
  

   such 
  a 
  possibility 
  that 
  we 
  attribute 
  M. 
  Berghs' 
  error 
  of 
  inter- 
  

  

  ' 
  Montgomery, 
  " 
  The 
  Heteiotype 
  Mitosis 
  in 
  Amphibia 
  and 
  its 
  General 
  

   SiKnificance," 
  'Biol. 
  Bull.,' 
  iv, 
  1903. 
  

  

  ^ 
  Berglis, 
  J., 
  " 
  La 
  Formation 
  des 
  Chromosomes 
  Heterotypioues 
  dans 
  la 
  

   Sporogeiiese 
  Vegetale," 
  ' 
  La 
  Cellule,' 
  t. 
  xxi. 
  

  

  