170 



Dr. FiTTON on the Strata below the Chalk. 



Ft. In. Ft. 



3. 

 4. 

 5, 

 6. 

 7. 

 8. 

 9. 

 10, 



11. 

 12. 

 13. 

 14. 



16. 

 17. 



Reddish, and purple sandy clay ; thickness not ascertained 



Blue and grey slaty clay, about 



Greenish Fuller 's-earth 2 



Dark shale 2 



Band of iron-stone 



A band of clay iron-stone and slaty clay 2 



Slaty clay approaching to clay iron-stone 



Firmer slaty clay including small flat nodules of iron-stone with numerous 



large Cyclades 10 



Hard grit, about 



Soft sand-rock, in 3 or 4 courses 



Firm sandy clay, with Cyclades ; firmer and more sandy at bottom .... 

 Yellow and reddish sand (or very soft sand-rock), in very thin alter- 

 nating courses 



Soft sand-rock, resembling the last but of lighter colour. This seems to 



go down to the base of the church. Visible, about 



A bed of firm sand-rock (immediately on the east of the church), about 

 Thin beds of slaty clay ; with interposed layers, or thin masses, nearly con- 

 tinuous, of clay iron-stone, including layers of Cyclades. Visible about 



In. 



9 



20 



17 



to 

 20 



Total thickness (visible) 70 



The strata in the roadside on the east of the church dip towards the east of south, at an angle 

 of about 10° to the horizon ; but behind the church the dip is 3 in 40 (or about 4°), towards the 

 north. 



The following is an approximate list of the strata in the cliff on the west of the Sussex Hotel, 

 between the bottom of the group last mentioned (III. d.), and the White sand-rock IV. ; cor- 

 responding therefore to the strata on the east of the White Rock, beneath the group III. a., which 

 contains the Endogenites. The measures exceed the truth, but the proportions are probably correct. 



Ft. 



1 . Brown sand-rock about 40 



2. Sand-rock with clay, including Cyclades, about 6 



3. Beds of darker hue, apparently consisting of clay and sand 10 



4. Dark yellowish brown sand-rock 6 



In. 

 















5 . Very white sand-rock, or slightly coherent sand, occupies about 30 feet at the bot- 

 tom of the cliff, and is continued downwards. The femur of an Iguanodon was 

 found in this stratum 



70 



30 



Total about 100 



IV. — In the space between the base of the cliff at the Brewery and the Castle-hill, all the beds 

 have been carried away. But the great white sand bed IV. a. ^' b. is itself visible at high-water 

 mark immediately below the middle point of the White Rock ; and thence to the place where the 

 road to Hollington is cut through this stratum. From the Castle-hill, where it is at least 80 feet 

 thick, it is continued with perfect uniformity of character to the top of Fairlight Down*. 



* The massive beds of scarcely concreted sand around Tonbridge Wells, — on the Race-ground, 

 at Rusthall-common, and in the heights of Frant and Eridge-park, appear to be a continuation of 



