﻿Bccse 
  

  

  ■ 
  ■/- 
  ----I 
  n 
  

  

  .Huse 
  

  

  'y^Alluriuni 
  

  

  m 
  Middle 
  Cretaceous 
  

   Dtrkoia 
  Cretaceous 
  

   Jura 
  Trias 
  

   Cccrh 
  ontferous 
  

  

  'fMmArchjoean 
  

  

  E. 
  

  

  

  *-^ 
  IF 
  iff. 
  4^, 
  

  

  ^^ 
  

  

  O. 
  

  

  e^^»^^^*tt»t^«^^«^^v 
  

  

  ';;,'>,'" 
  

  

  -^'^-'•'^?e^A-'; 
  

  

  77 
  --V;,Tir 
  :■/;/; 
  

  

  H 
  

  

  ■^•7^%r. 
  4r. 
  

  

  Sections 
  across 
  

   the 
  Cation 
  

  

  AM. 
  PHOTO-LITHO.CO. 
  I«.V. 
  {OSSOKNE'S 
  PHOCEStl 
  

  

  