﻿)uart. 
  Journ 
  Geol 
  . 
  Soc 
  .Vol 
  .XXX 
  . 
  PI 
  .XXII 
  

  

  

  

  5 
  

  

  

  Scale 
  of 
  Miles. 
  

  

  o 
  Tighgeadh 
  J' 
  1 
  

  

  OF 
  MULL 
  

  

  Mintern 
  Bros 
  Iith 
  

  

  