﻿. 
  Brown: 
  Silicious 
  skeleton 
  

  

  415 
  

  

  sections 
  mounted 
  In 
  glycerine, 
  the 
  number 
  of 
  rods 
  as 
  estimated 
  

   from 
  the 
  refractive 
  areas 
  was 
  placed 
  at 
  about 
  two 
  hundred. 
  

   The 
  difference 
  in 
  estimates 
  from 
  burned 
  and 
  unburned 
  material 
  

  

  A 
  

  

  t 
  

  

  I' 
  

   / 
  

  

  D 
  

  

  t 
  

  

  f 
  

  

  f 
  

  

  n 
  

  

  

  :i 
  

  

  fi-ltM 
  

  

  i 
  

  

  r>l 
  

  

  '■ 
  * 
  

  

  i»' 
  

  

  

  ^11 
  

  

  B 
  

  

  --,- 
  

  

  

  

  c 
  

  

  E 
  

  

  F 
  

  

  G 
  

  

  *' 
  

  

  5^ 
  

  

  |£Ki 
  

  

  -■-it 
  : 
  

  

  H 
  

  

  Fig. 
  3. 
  Burned 
  material. 
  A, 
  cross-section 
  of 
  fiber 
  showing 
  exposed 
  skeleton 
  

   rods; 
  B, 
  C, 
  D, 
  G, 
  H, 
  showing 
  unbranched 
  rods; 
  G 
  and 
  JE7, 
  showing 
  lateral 
  ties; 
  F. 
  

  

  r 
  

  

  branched 
  rod; 
  E, 
  glass 
  beads 
  formed 
  by 
  heat. 
  

  

  may 
  be 
  explained 
  from 
  the 
  probability 
  that 
  part 
  of 
  the 
  rods 
  in 
  the 
  

   burned 
  material 
  may 
  have 
  been 
  broken 
  off 
  dose 
  to 
  the 
  matrix 
  and 
  

   therefore 
  were 
  not 
  seen. 
  The 
  number 
  of 
  rods 
  in 
  a 
  fiber 
  of 
  Tecoma 
  

   may 
  therefore 
  be 
  estimated 
  at 
  not 
  less 
  than 
  one 
  hundred 
  and 
  

   possibly 
  twice 
  that 
  number. 
  

  

  The 
  relative 
  position 
  of 
  the 
  rods 
  in 
  a 
  fiber 
  and 
  the 
  mnaner 
  of 
  

   branching 
  may 
  be 
  observed 
  from 
  burned 
  macerated 
  material. 
  

   When 
  the 
  wood 
  of 
  Tecoma 
  is 
  treated 
  with 
  Schultze's 
  solution, 
  

  

  llolnrr 
  ri^ 
  r^r^^ 
  ^c^^ 
  n,'^r-iV 
  o^Trl 
  I't 
  I'c 
  nn^-^lblp 
  tO 
  disSolvB 
  aWEV 
  both 
  

  

  primary 
  

  

  tertiary 
  

  

  