﻿488 
  DR 
  GEORGE 
  WILSON 
  ON 
  NEW 
  PROCESSES 
  FOR 
  FLUORINE, 
  &c. 
  

  

  and 
  mica 
  slate, 
  will 
  acquire 
  additional 
  significance 
  from 
  the 
  discovery 
  that 
  fluorine 
  

   occurs 
  in 
  the 
  rocks 
  which 
  form 
  their 
  matrices. 
  

  

  Uk, 
  The 
  presence 
  of 
  fluorine 
  in 
  plants 
  is 
  now 
  rendered 
  doubly 
  probable, 
  as 
  it 
  

   may 
  enter 
  them 
  alike 
  in 
  combination 
  with 
  a 
  metal 
  such 
  as 
  potassium, 
  sodium, 
  or 
  

   calcium, 
  or 
  in 
  association 
  with 
  silica. 
  

  

  5tk, 
  The 
  presence 
  of 
  fluorine 
  in 
  animals 
  may 
  now 
  be 
  fully 
  accounted 
  for 
  ; 
  as 
  

   it 
  not 
  only 
  enters 
  their 
  bodies 
  in 
  the 
  water 
  they 
  drink, 
  but 
  is 
  contained 
  in 
  the 
  

   vegetable 
  food, 
  by 
  which, 
  directly 
  or 
  indirectly, 
  the 
  whole 
  animal 
  kingdom 
  is 
  

   sustained. 
  The 
  prosecution 
  of 
  these 
  views, 
  however, 
  will 
  be 
  taken 
  up 
  in 
  succeed- 
  

   ing 
  papers. 
  

  

  