Dr. FiTTON on the Strata below the Chalk. 289 



\_Purbcch.~\ 



C. "Heath". Green and grey sand, of firm consistence ; at the bottom mixed with whitish 

 fissile matter 



7, An indistinct bed of soft fissile limestone (" Pendle", my guide calls it), which seems 



to pass below into very hard stone, including Cypris and worn ovoid particles of 

 whitish stone. It contains also small bones and scales of fishes 



8. The beds below 7. are here uncertain; but are visible in some other pits. 



The Portland strata here, in general, differ from those of Portland Island and of Dorsetshire ; 

 no thick beds of good stone occurring, and no flints. 



I saw here no traces of silicified wood, nor of Cycadese, though I examined everywhere the 

 beds of clay, with the hope of meeting them. 



In another pit near Whitchurch the lower beds were visible, the whole being thus : 



Pit near Whitchurch : — B. 



Rubble. 



\_Weald Clay, and Hastings Sandl"]. Ft. In. 



1 . Stony matter, much decomposed 4 



2. Dark brown and grey tough clay, with some layers of sand, including Mytili 1 



3. " Cornstone " ; (see 4. of the preceding list) 2 



4. "Cheesecakes"; clay in very thin flakes, alternating with sand. (Compare with the"! ^ 



alternation described in (83.) p. 1 68.) j 



5. Rubble and sandy stone 10 



6. "Greenstone"; concreted sand, and grit, like that of Hastings ? — (See 5. c. List A. last "(^ . 



:} 



page.) 6 in. to 



7. " Firestone" ; soft limestone 10 



8. a. Sand ; uniform, greenish -grey, coherent 1 6 



b. Dark clay 2 1 8 



[Purhech Strata.'\ 



9. "Pendle"; soft fissile limestone, including worn rounded particles of stone, which") 



give to the whole the aspect of oolite ; and containing Cypris ; Modiola, two species ; >\ 6 

 a Mytilus ; Cyclas parva ; and portions of an Astacus J 



[PortlandJ] 



10. Limestone; often bluish, abounding in Trigoniae, Venericardia, and other Portland") . 

 fossils J 



11. Good stone, called " Builders " ; — often bluish 2 6 



Bottom of the Pit. Total about 10 ft. to 12 



Pits at the top of Quainton Hill, 



About a furlong east of the Ordnance Station, which is 754 feet above the sea Beds inclined 

 towards the south at about 3° 30'. — See the Transverse Section, PI. X. b. fig. 10. 

 [Lower greensand, and Wealden ?]. 



1. Red sand, with concretions of hard ferruginous conglomerate ; ochre at the bottom : — 



visible about 2 



2. a. Clay and sand ; brownish and grey, in thin alternating flakes . . . .about 1 6 



6. Fuller's earthy wax-like, as at Brill, (4. p. 280.) 9 2 3 



2p 2 



