﻿THE 
  

  

  QUARTERLY 
  JOURNAL 
  

  

  GEOLOGICAL 
  SOCIETY 
  OF 
  LONDON. 
  

  

  EDITED 
  BY 
  

  

  THE 
  ASSISTANT-SECRETARY 
  OF 
  THE 
  GEOLOGICAL 
  SOCIETY. 
  

  

  VOLUME 
  THE 
  TWENTIETH, 
  

  

  1864. 
  

  

  PART 
  II. 
  MISCELLANEOUS. 
  

  

  