﻿1861.] 



DREW HASTINGS SAND. 



271 



Although, no fossils were seen, the phenomena of cleavage, which 

 are by no means well developed among the rocks constituting the 

 Grampians, are beautifully shown in the shales associated with the 

 limestone in this spot. These possess a cleaved structure to a great 

 extent, having, in some instances, lost all traces of their original 

 bedding. The thin limestones, however, are devoid of this structure, 

 — a circumstance which supports the inference that, although the 

 rocks of the Grampians have been subjected to the pressure which 

 results from great flexures and contortions, the lithological nature 

 of the strata was such, except in the case of the shale-beds, that no 

 rearrangement of particles could take place to give rise to cleavage- 

 planes. 



March 6, 1861. 



Francis George Shirecliff Parker, Lieut. H.M. 54th Eegiment, 

 Roorkee ; and J. Gwyn Jeffreys, Esq., 25 Devonshire Place, Port- 

 land Place, were elected Fellows. 



The following communications were read : — 



1. On the Succession of Beds in the " Hastings Sand " in the 

 Northern Portion of the Wealden Area. By Frederic Drew, 

 Esq., F.G.S., of the Geological Survey of Great Britain. 



Contents : 



I. Introduction. 



II. Wealden Formations in the Meridian and Neighbourhood of Tunbridge 

 Wells. 



1. Weald Clay. 3. Wadhurst Clay. 



2. Tunbridge Wells Sand. 4. Ashdown Sand. 



A. Presence of the Ashdown Sand in the Railway-cutting between Tun- 

 bridge and Tunbridge Wells, and the Extent of the Tunbridge Wells 

 Sand to the Northward. 



III. Eastward of the Meridian of Tunbridge Wells. 



1. Weald Clay. 4. Ashdown Sand. 



2. Tunbridge Wells Sand. 5. Hastings Sand around Hastings 



3. Wadhurst Clay. and Battle. 



IV. Westward of the Meridian of Tunbridge Wells. 



1. Weald Clay. 2. Tunbridge Wells Sand. Upper 



and Lower, with the intermediate " Grinstead Clay." 

 V. Nomenclature of the Hastings Sands. 



1. Dr. Mantell's Nomenclature. 



2. Reasons for using the Names now proposed. 

 VI. Weald Clay of the Neighbourhood of Horsham. 



VII. Conclusion. Lithological Characters of the Hastings Sand. 



I. Introduction. — Having for the last two years been engaged (in 

 the course of the progress of the Government Survey) in examining 

 part of that large tract in the south-east of England which is made 

 by the outcrop of the Wealden strata, and having now become ac- 



voi. xvn. — part r. r 



