﻿264 
  BOTANICAL. 
  GAZETTE. 
  [October, 
  

  

  later 
  stage 
  the 
  ovules 
  are 
  present 
  in 
  the 
  loculi 
  as 
  club-shaped 
  

   protuberances 
  arising 
  from 
  their 
  inner 
  angles 
  as 
  represented 
  

   in 
  fig. 
  2. 
  The 
  loculi 
  are 
  relatively 
  larger 
  than 
  in 
  the 
  

   younger 
  stage. 
  

  

  If 
  a 
  microscopical 
  examination 
  of 
  the 
  cross 
  section 
  of 
  the 
  

   mature 
  lemon 
  be 
  now 
  made, 
  the 
  rind 
  is 
  seen 
  to 
  be 
  madeupof 
  

   cells 
  of 
  various 
  shapes 
  and 
  sizes. 
  The 
  epidermis 
  is 
  a 
  

   thin 
  layer 
  in 
  which 
  the 
  cells 
  are 
  thin-walled, 
  empty 
  and 
  

   colorless 
  ; 
  these 
  cells 
  are 
  small 
  in 
  size 
  and 
  rectangular 
  

   in 
  shape. 
  Next 
  to 
  the 
  epidermis 
  appears 
  a 
  layer 
  of 
  

   thin 
  - 
  walled 
  palisade 
  cells, 
  thenfoUow 
  cells 
  containing 
  

   chromatophores, 
  some 
  partially 
  iilled, 
  others 
  full. 
  The 
  

   oil 
  glands 
  are 
  located 
  in 
  the 
  yellow 
  part 
  of 
  the 
  rind, 
  some 
  

   times 
  extending 
  into 
  the 
  white. 
  They 
  are 
  large 
  struc- 
  

   tures 
  visible 
  to 
  the 
  naked 
  eye 
  ; 
  their 
  walls 
  are 
  composed 
  

   of 
  thin-walled 
  rectangular 
  cells 
  so 
  arranired 
  as 
  to 
  give 
  

  

  j^Vl.LVX 
  ^^..v:, 
  ow 
  K^. 
  v. 
  

  

  the 
  glands 
  a 
  circular 
  or 
  oval 
  shape 
  when 
  seen 
  in 
  out- 
  

   line. 
  Inside 
  the 
  colored 
  is 
  the 
  white 
  portion 
  of 
  the 
  nnd, 
  

   which 
  is 
  made 
  up 
  of 
  loose 
  spongy 
  parenchyma 
  with 
  elon- 
  

   gated 
  cells. 
  The 
  small 
  specks 
  mentioned 
  as 
  being 
  visible 
  

   without 
  the 
  microscope 
  will 
  be 
  seen 
  to 
  be 
  fibro-vascular 
  bun- 
  

   dles, 
  some 
  of 
  which 
  are 
  found 
  to 
  extend 
  through 
  the 
  lengt" 
  

   of 
  the 
  lemon, 
  while 
  others 
  form 
  a 
  net-work 
  with 
  the 
  princi- 
  

   pal 
  bundles 
  and 
  one 
  another. 
  A 
  large 
  bundle 
  is 
  seen 
  at 
  the 
  

   center 
  of 
  the 
  back 
  of 
  each 
  locuUis, 
  and 
  one 
  also 
  at 
  the 
  angle 
  

   between 
  any 
  two 
  loculi. 
  The 
  other 
  smaller 
  bundles 
  are 
  

   found 
  sometimes 
  with 
  a 
  rather 
  regular 
  arrangement, 
  at 
  otn- 
  

   ers, 
  apparently 
  scattered 
  promiscuously 
  throughout 
  the 
  riri 
  

   (see 
  fig. 
  I). 
  Some 
  sections 
  lay 
  bare 
  bundles 
  lying 
  at 
  ngn 
  

   angles 
  with 
  the 
  long 
  axis 
  of 
  the 
  lemon. 
  The 
  specks 
  noticec 
  

   in 
  the 
  center 
  column 
  are 
  seen 
  to 
  be 
  fibro-vascular 
  bunmj^ 
  

   also. 
  The 
  center 
  column 
  is 
  composed 
  of 
  large-celled, 
  spong. 
  

   parenchyma. 
  The 
  dissepiments 
  between 
  the 
  loculi 
  are 
  com- 
  

   posed 
  of 
  spongy 
  tissue 
  with 
  tougher 
  thicker-walled 
  tissue 
  

   either 
  side. 
  The 
  pulp 
  clubs 
  are 
  of 
  a 
  very 
  delicate 
  stnictu 
  ' 
  

   the 
  wall 
  IS 
  composed 
  of 
  elongated 
  narrow 
  cells 
  paraUei; 
  , 
  

   the 
  long 
  axis 
  of 
  the 
  club 
  ffi^. 
  2). 
  The 
  inner 
  part 
  ot 
  tn 
  

  

  on 
  

  

  club 
  IS 
  divided 
  into 
  large 
  very 
  thin-walled 
  cells, 
  which 
  c 
  

   tarn 
  the 
  juice 
  (fig. 
  4).^ 
  The 
  tissue 
  forming 
  the 
  wall 
  0'^^ 
  

   dub 
  IS 
  an 
  outgrowth 
  from 
  the 
  thickened 
  cells 
  of 
  the 
  dl^sep 
  

   ment 
  walls, 
  while 
  the 
  inner 
  juice 
  cells 
  are 
  a 
  continuation 
  tro 
  

   "le 
  spongy 
  parenchyma 
  at 
  the 
  back 
  of 
  the 
  loculi. 
  

  

  t-et 
  us 
  now 
  turn 
  to 
  the 
  development 
  and 
  inquire 
  wha^' 
  

  

  