8 
THE GEOLOGIST. 
tion of the Sponge and Tied gravels in East pit, and again met with 
the Eed-gravel, in a slightly different form, near the top of Badbury 
Hill, I should not have ventured to assign any positive position to 
the true Sponge-gravel. 
By what I gather from Mr. Sharpe's memoir ' On the Age of the 
Fossiliferous ISands and Gravels of Farringdon and its Neighbourhood' 
(Quar. Jour. Geol. Soc, vol. x. p. 176), the author of that paper was 
not aware of auy real difference between the Sed and the Sponge- 
gravels, and certainly not that they were distinct deposits, as is 
no doubt the case; nor does he seem to have himself examined the 
1. Section at Furze Hill. 
Surface soQ .Ippi 
Ferruginous sands on sur- 
face, with ironstone and 
chert (rarely). 
Do. with ironstone concre- 
tions much disturbed. 
Light-coloured and ferrugi- 
nous sand, with ironstone 
concretions in position. 
Fossils numerous. 
Ash-coloured sands, with p 
thin layers of clay, regu- J 
larly stratified. No fos- \^ 
sils. 
Pebbles in surface soil of 
fields, with ferruginous 
matter. { 
Level of Sponge-gravel . . 
Kimmeridge clay at base of 
hill towards Feruhara. ,|| 
Goral-rag 
2. Section at Badbnry Hill. 
Surface soil 
Sands apparently ferruginous, with ^ 
chert, from a to top of hill. 
Ash-coloured sand regularly strati- 
fied; much like the sand with 
clay at Furze Hill .... 
Dark-brownish and ferruginous 
sand with pebbles, bryozoa, etc., 
like the Red-gravel in East Pit. 
Do. do. with hard calcareous con- 
cretions. 
o 
> o 
m 
Traces of Sponge-gravel seen in a 
lane leading from Badbnry Hill 
to Great CoxweU .... 
Kimmeridge clay, in lane leading to 
Great Coxweil. 
43 
Coral-rag 
