70 GREEN OR CHLORITE SAND. 



Such are the principal members of this deposit, that occur in Sussex. 

 The lowermost beds first appear in the western part of the county at 

 Haslemere, Blackdown hill, &c., where the layers and concretions of chert 

 that characterize this division, are provincially termed JVhinstone. These 

 are succeeded by the ferruginous sand of Parham, which continues with 

 but little interruption to Hurstperpoint, and there gradually passes into 

 the red and white sand and sandstone of Ditchhng. Proceeding in an 

 easterly direction, the sand assumes its characteristic appearance, and at 

 "Westmeston, Cooksbridge, Wellingham, Kingmer, the Broyle, &c. per- 

 fectly resembles the chlorite sand of A^-^iltshire. Approaching Eastbourne, 

 it passes into soft grey sand and sandstone, and is there terminated by 

 the ocean. 



The outcrop of the green sand thus briefly sketched, forms an incon- 

 siderable tract of country, of variable breadth, extending from Eastbourne, 

 to the western extremity of the county, and lying parallel with the 

 northern escarpment of the Downs. 



The subdivisions of this deposit in Sussex are not sufficiently important 

 to require a separate description, and we shall therefore proceed to in- 

 vestigate the phenomena they present to our notice, without adhering to 

 geognostic arrangement. 



The beds and concretions of chert, occur principally in the western 

 division of the county. This substance is a variety of hornstone ; it occurs 

 massive, is of a greyish yellow or greenish colour, has a conchoidal frac- 

 ture, and a glimmering lustre. To my excellent friend, John Hawkins, 

 Esq. F. K. S. &c. of Bignor Park, I am indebted for the following account 

 of its characters and position. 



" This stone is a compact mass of quartz, but not homogeneous, for 

 it contains iron, and perhaps some other substance. It occurs in great 

 abundance in the beds of our building stone, a ragged sandstone, which 

 constitutes a chain of hills running E. and W. on the north side of the 

 Arun and Pother : the strata there have a regular dip to the south, and 

 basset out on the north. At Petworth and on the top of the high hill to 

 the eastward, this hard stone is dug in great quantities for repairing the 



