﻿BlflANG 
  TILL 
  K. 
  SVENSKA 
  VET. 
  AKAD. 
  HAOLINGAR. 
  Band 
  6. 
  N:o 
  13. 
  

  

  ON 
  

  

  THE 
  GRAPTOLITES 
  

  

  DESCRIBED 
  BY 
  

  

  HISINGER 
  

  

  AND 
  THE 
  OLDER 
  SWEDISH 
  ATJTHORS 
  

  

  BY 
  

  

  S. 
  A. 
  TULLBERG. 
  

  

  WITH 
  3 
  PLATES. 
  

  

  COMMUNICATED 
  TO 
  THE 
  ROYAL 
  SWEDISH 
  ACADEMY 
  OF 
  SCIENCES 
  

  

  JUNE 
  8, 
  1881. 
  

  

  STOCKHOLM, 
  1882. 
  

  

  KONGL. 
  BOKTRYCKERIET, 
  

  

  P. 
  A. 
  NORSTEDT 
  ii 
  SÖNER. 
  

  

  