()U 
CASTLE HILL. 
The selenite or crystallized gypsum (of No. 6.) 
occurs in flattish crystals, from six to eight inches 
long, which are generally in the form of oblique 
parallelepipeds, or of rhomboidal prisms. The 
fibrous gypsum is deposited in veins in the marl ; 
the foliated variety occurs in large tabular masses, 
composed of thin laminae, and is frequently coated 
with a coaly substance. 
The surturhrand or coal (No. 5.) appears to be 
analogous to that of the Paris Basin, Corfe Castle, 
and Alum Bay ; it also resembles the surturbrand 
of Iceland ; some specimens are exactly similar to 
the Bovey coal. 
a little lime. Reagents show it to contain the following substances in 
solution : — 
Oxide of iron, Lime, 
Alumina, Carbonic acid. 
Muriatic acid. Soda. 
Sulphuric acid, 
“This last substance 1 will not be quite certain of; but I expect 
shortly to be able to make a more perfect analysis, and to give a better 
account of its situation, which is of some importance, as I expect it is 
not for distant from the spot where the native alumina or snbsulphate is 
found.” 
* The boulders of this breccia, like those of the siliceous sandstone, 
were used in distant ages as sepulchral stones. Beneath one of those, 
near Brighton church, an urn of high antiquity, containing human bones 
and ashes, was discovered by the late Rev. .T. Douglass, F.A.S. 
An immense block of this kind is situated in Hove parish, near the 
Shorehara road, and is vulgarly called Goldstone, “ from the British 
word col, or holy-stone; it is evidently a tohnen of the British period. 
This stone is in a line to the south of Goldstone Bottom, at the end of 
which, close to the rise of the hill, is a dilapidated cirque, composed of 
large stones of the same kind. On the farm of Thomas Read Kemp, Esq. 
opposite Wick, are two dilapidated kisl-vaens, formed of similar mate- 
rials ; and on each siile of the British trackway, leading to the Devil's 
Dyke, blocks of the same substance may also be observed.” Extract of 
a Letter from the late Rev. J. Douglass to the Author, dated May, 1818. 
