The Monograph on the 'Revtilia of the Wealren and Purbkck Formations' was piiblislied as 

 follows : 



Fart I, pages 1 — 12; plates I— IX, December, 18o3. 



Part II, pages 1—54 ; plates I— XIX and XVI a, May, 1855. 



Part III, pages 1—26; plates I— XII, February, 1857. 



Part IV, pages 8—26 ; plates IV— XI, April, 1858. 



Part V, pages 31—39 ; plate VIII. March, 1861. 



Supplement I, pages 1 — 7 ; plates I — III, April, 1858. 



Supplement II, pages 20 — 44 ; plates V — XII, November, 1859. 



Supplement III, pages 19 — 21 ; plate X, August, 1864. 



