THE EAG3H0T BEDS OF THE LOXDOX BASLtf. 



387 



ferous layer (not Septaria) running through the London Clay. In 

 the brickyards a little further west, a layer of pebbles shows a dip of 

 5° about S.E. for the London Clay. 



Section Gr. Bracknell Station. 



ft. 



a. Surface-soil containing numerous flint-pebbies 1 (at 235 O.D.) 



d. Laminated clay-and-sand bed with irony concretions I 



(sand apparently once a greensand) J 



e. Dark greyish-black carbonaceous fine quartz-sand (con- ] 9 



taining 2 '5 per cent, of 0 and freshwater diatoms) ... J 



Total exposed 13 



JNote. — " e "=bed " a " of my previous section (vol. xli. p. 505). 



Section H. Cutting -slope 200 yards East of Bracknell Station. 



ft. 



b. Loamy sand with pebbles at the surface 10 to 15 



c. Pebbles imbedded in a stiff loam 1 (265 O.D.) 



d v Buff-coloured loamy sand 3 



d 2 . Laminated clay-and-sand bed with ferruginous concre- 1 ^ 



tions, the lowest 8 inches a black shale J 



e. Dirty quartz-sand (exposed in excavation to) 1 



Total exposure in a fresh excavation 22 



Before the recent eastward extension of the up-platform a well 

 was dug in bed " e " by Mr. Ripley, below the level of the line. He 

 . is positive that it was not London Clay, as he knows it in the neigh- 

 bouring brick-yards. 



Section I. Easthamp stead Church (South end of outlier). 



Combining the well-section at the village school, the road-section 

 above the church, and the road-section below the church. 



ft, 



a. Quaternary or pre-quaternary gravel (angular flints, pebbles, "I , ^ 



and chert) J 



b. Loamy yellow sand (probably Upper Bagshot) reconstructed 1 * 



near the gravel J 



c. Pebble-bed, seen in situ in the churchyard, in the road- | 



cutting below the church, behind the cottage opposite, well L 3 (260 O.D.) 

 exposed in excavations last summer at the workhouse ... J 



d. Clay-and-sand bed (similar to bed " d " in the above sections > n 



F.G.H) J iU 



I. London Clay seen in the road a few feet above the brook... ? 



Total of Bagshot exposed 33 



The laminated clay-and-sand bed I take to be the same in all the 

 four sections. It runs through the hill, and is seen in the lane 

 which crosses the outlier north of Wick ilill House. Its altitude 

 throughout is 250 to 260 (O.D.). There is a higher pebble-bed in 



* From data in the road-cutting, in a well close by, and in the graves in the 

 churchyard. 



