8 



THE GEOLOGIST. 



tion of the Sponge and Red gravels in East pit, and again met with 

 the E-ed-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 c On the Age of the 

 Fossiliferous iSands and Gravels of Farringdon and its Neighbourhood ' 

 (Quar. Jour. Greol. Soc, vol. x. p. 176), the author of that paper was 

 not aware of any real difference between the Red 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 soil , 



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- I 

 larly stratified. No fos- i 

 sils. |^ 



Pebbles in surface soil of 

 fields, with ferruginous 

 matter. 



Level of Sponge-gravel 



Kimmeridge clay at base of 

 hill towards Fernham. 



Coral- ra 



2. Section at Badbury Hill. 

 Surface soil 



Sands apparently ferruginous, with , 

 chert, from a to top of hill. S 



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 



m 



Traces of Sponge-gravel seen in a 

 lane leading from Badbury Hill 

 to Great Coxwell .... 



Kimmeridge clay, in lane leading to 

 Great Coxwell. 



Coral-rag 



m 



