16 
In passing over the Strata from east to west, and noticing their successive terminations, it may 
be remarked, that this Stratum, in a large portion of the island, is the first beneath the Chalk 
which produces quarry stone hard enough to be used on the roads. In the space between the 
course of this Stratum and the green sand, a very hard material is sometimes found, consisting 
of thin beds of coarse flint or chert, which, in layers about three inches thick, is used 
in building at Haslemere, Warminster, and Chard. 
No flint below this Stratum. The organized fossil shells preserved in chert, are the finest in 
the kingdom. 
FIG. 
1 Cast of Natica Lam . 
2 Turritella inside cast - 
3 Cast of Venus Linn. 
4 Trigonia - 
5 Venus, inside cast 
6 Pecten - 
7. Fossil Wood - 
ORGANIZED FOSSILS . 
Swindon. 
Swindon. Portland. 
- Swindon. 
Swindon. Chicksgrove. Fonthill. Teffont. 
Swindon. Chicksgrove. 
Swindon. Portland. Chicksgrove. Thame. 
Woburn. Fonthill, 
