and the adjoining Parts of Hants and Surrey. 101 



and swells into hills, which increase in elevation as they recede from the in- 

 cumbent strata, and finally attain a heig;ht equal to the most lofty points of 

 chalk in the range of the South-downs. 



The beds dip every where towards the chalk, but in the south-eastern part 

 of the district more rapidly than in the north-western. They are inclined 

 towards the Alton chalk-hills at an angle which is scarcely perceptible, and 

 accordingly in that quarter are expanded over a more considerable extent of 

 surface than towards the South-downs, where the dip frequently amounts to 

 10 or 15 degrees. 



Woolmer Forest, Petersfield, Haslemere, Midhurst, and Petworth are in 

 this formation. 



The superior beds consist of quartzose grains combined with oxide of iron ; 

 and they abound in veins of iron-stone, which are occasionally hollow and of 

 large dimensions, at other times compact. The colour of the sands in this 

 part of the formation is very varied : in some places, as near Rogate, deep sec- 

 tions occur of a pure white sand ; whilst in Woolmer Forest and at Frensham 

 the mass is dark red, with many veins of contorted and cellular iron-stone. 



A bed of calcareous grit appears to occur uniformly along the centre of this 

 formation, and may be traced from Godalming through Headley, Lyss, Rogate, 

 Stedham to Dean Farm near Petworth. At the latter place it is a compact blue 

 limestone, and is extensively quarried for the roads ; but in the former situa- 

 tions, the grit is a conglomerate of quartz grains and pebbles, bound together 

 by a strong calcareous cement, and is called Bargate Stone* ; — it is hard and 

 durable, and has recently been burnt for lime. 



Towards the lower part of the sands, gray and blue chert occurs, particu- 

 larly at Iping Hammer-ponds, Brinksole Heath, &c. &c. 



The lowest beds are marked by a great change of appearance; — green par- 

 ticles are now intimately mixed throughout the mass, and all the hills which 

 immediately adjoin the valley of the Weald clay, afford a yellowish sandstone 

 filled with green particles, which is used for building, and is the only bed of 

 this formation west of the river Arun, which I have observed to contain fossils, 

 or rather the casts of them f . These casts appear to be of Ammonites and 

 Terebratulae, but were not sufficiently perfect for Mr. Sowerby to distinguish 

 the species. 



* Mr. Greenough informs me that this calcareous grit extends eastward thoughout the same 

 formation in Surrey and Kent, where also it is known by the name of Bargate Stone. 



+ Parham Park is in this formation; but being west of the river Arun, the consideration of the 

 fossils found there is not now entered upon. — Those however which I have seen from that place, 

 are very unlike the casts to which I now allude. 



