﻿Weatherwax: 
  Structure 
  of 
  the 
  ear 
  of 
  maize 
  

  

  30 
  1 
  

  

  This 
  chaff 
  consists 
  of 
  the 
  glumes 
  and 
  palets 
  of 
  the 
  spikelets, 
  and 
  

   its 
  removal 
  exposes 
  the 
  alveoli, 
  in 
  each 
  of 
  which 
  a 
  pair 
  of 
  spike- 
  

   lets 
  is 
  borne. 
  When 
  these 
  alveoli 
  are 
  brought 
  out 
  clearly, 
  the 
  

   work 
  may 
  be 
  finished 
  with 
  

   a 
  piece 
  of 
  sandpaper, 
  but 
  

   this 
  is 
  usually 
  unnecessary. 
  

   Any 
  corncob, 
  typical 
  or 
  

   anomalous, 
  when 
  treated 
  

   in 
  this 
  way, 
  displays 
  a 
  num- 
  

   ber 
  of 
  longitudinal 
  series 
  of 
  

   alveoli 
  corresponding 
  to 
  the 
  

   rows 
  of 
  paired 
  spikelets. 
  

  

  The 
  results 
  secured 
  when 
  

   this 
  method 
  is 
  applied 
  to 
  

   an 
  ear 
  having 
  more 
  rows 
  

   at 
  the 
  base 
  than 
  at 
  the 
  tip 
  

   are 
  best 
  explained 
  by 
  refer- 
  

   ence 
  to 
  the 
  figures. 
  Fig. 
  2 
  

   is 
  an 
  ear 
  of 
  flint 
  corn 
  with 
  

   ten 
  rows 
  at 
  the 
  base 
  and 
  

   eight 
  at 
  the 
  tip; 
  four 
  rows 
  

   are 
  seen 
  apparently 
  giving 
  

   place 
  to 
  two 
  nearthe 
  middle 
  

   of 
  the 
  ear. 
  If 
  this 
  change 
  

   occurs 
  as 
  Collins 
  explains 
  

   it, 
  we 
  should 
  find 
  on 
  the 
  

  

  cob 
  of 
  this 
  ear 
  five 
  rows 
  of 
  

   alveoli 
  running 
  full 
  length; 
  

   but 
  Fig. 
  3, 
  which 
  shows 
  a 
  

   portion 
  of 
  the 
  cob 
  of 
  this 
  

   ear 
  treated 
  as 
  above 
  de- 
  

   scribed, 
  shows 
  the 
  fallacy 
  

  

  c 
  

  

  1 
  a 
  

  

  3 
  4 
  5 
  6 
  7 
  8 
  9 
  10 
  11 
  12 
  

  

  of 
  this 
  theory. 
  

  

  Fig. 
  4. 
  Transition 
  from 
  twelve 
  to 
  ten 
  rows. 
  

   1 
  here 
  are 
  Yic 
  5. 
  The 
  erroneous 
  explanation 
  of 
  Fig. 
  4; 
  

  

  five 
  rows 
  of 
  alveoli 
  at 
  the 
  the 
  dotted 
  lines 
  indicate 
  the 
  continuity 
  of 
  rows, 
  

   base 
  and 
  four 
  at 
  the 
  tip, 
  ^l'^" 
  ^: 
  "^^^ 
  ''°''''' 
  explanation 
  of 
  the 
  trans- 
  

  

  ition 
  indicated 
  in 
  FiG. 
  4. 
  

  

  the 
  change 
  in 
  number 
  06- 
  

  

  curring 
  at 
  the 
  exact 
  point 
  where 
  two 
  rows 
  of 
  grains 
  are 
  dropped. 
  

  

  These 
  results 
  were 
  duplicated 
  with 
  several 
  ears, 
  no 
  ear 
  being 
  found 
  

  

  