L ^. 13, 



MEMOIRS 



GEOLOGICAL SUEVEY 



THE UNITED KINGDOM. 



ILLUSTRATIVE OP 



BRITISH OEGANIC REMAINS. 



DECADE VI. 



PUBLISHED BY ORDER OF THE LORDS COMMISSIONERS OF HER MAJESTy's TREASURY. 



LONDON: 



PRINTED FOR HER MAJESTY'S STATIONERY OFFICE : 



PUBLISHED BY 



LONGMAN, BROWN, GREEN, AND LONGMANS. 



1852. 



