﻿ANNIVERSARY 
  ADDRESS 
  OF 
  THE 
  PRESIDENT. 
  

  

  xlix 
  

  

  

  ^ 
  

  

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   to 
  

  

  © 
  

  

  r< 
  

   ■»»> 
  

  

  OS 
  

  

  

  

  o 
  

  

  

  

  

  >Lower 
  Lias. 
  

  

  ► 
  Middle 
  Lias. 
  

   • 
  Upper 
  Lias. 
  

  

  

  BO 
  

  

  a> 
  

  

  Pi 
  

  

  o 
  

   IS] 
  

  

  A. 
  Planorbis 
  ^ 
  

  

  A. 
  Bucklandi 
  

  

  A. 
  Turneri 
  

  

  A. 
  obtusus 
  

  

  A. 
  oxynotus 
  

  

  A. 
  raricostatus 
  

  

  A. 
  Davoei 
  et 
  A. 
  Henleyi 
  " 
  

  

  A. 
  margaritatus 
  

  

  A. 
  spinatus 
  

  

  A. 
  communis 
  

  

  A. 
  Jurensis 
  

  

  

  Total 
  contents 
  

   of 
  the 
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  Species. 
  

  

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