240 



The Neiv Forest : its History and its Scenery. 



It is a bed, however, whicli is seldom open, and can be 

 worked only at particular tides. It may easily be recognized as 

 lying between the Leaf Bed and the well-marked Lignite Bed, 

 which shows the first traces of salt-water, and where, in the 

 lower portion, Neritina concava may be abundantly found. This 

 last bed may be well seen at Beckton Bunny (Section IL). The 

 lignite, however, though it Avill give a good deal of heat, will not 

 blaze. Locally it is sometimes used for making black paint. 



Section II. of Beckton Cliff immediatehj to the west of the Bunny. 



Flint gravel — scarcely more than 3 or 4 feet, with 



an uncertain band of white sand. 



Lignite— 3 inches. 

 Brown clay — 3 inches. 

 Lignite — 3 inches. 



Marl and sand — 2 feet 2 inches. 



Ligneous bed, containing shells much broken- 

 8 inches. 



Grey sand — 2 feet 4 inches. 



Orange-coloured sand, with very few fossils at this 

 point, though plenty eastward — 15 feet 9 inches. 



Olive bed. Fossils abundant— 27 feet 3 inches. 



The present sea-shore. 



Passing on to Beckton Bunny we reach the first true bed 

 of the Lower Marine Foimation, which rises a little eastward of 

 that ravine. I have distinguished it as the Olive Bed, from the 



