﻿262 
  

  

  J. 
  W. 
  JTJDD 
  OX 
  THE 
  SECONDARY 
  ROCKS 
  OF 
  SCOTLAND. 
  

  

  N 
  

  

  ill 
  % 
  l 
  

  

  £ 
  

  

  ^ 
  

  

  

  S 
  

  

  re 
  

  

  I 
  

  

  o 
  

  

  CO 
  

  

  si 
  

  

  X^= 
  

  

  