224 GEOLOGY OF THE ISLE OE WIGHT. 



be contemporaneous with the far thicker deposits about to be 

 described. 



But the principal deposit consists o£ brick-earth resting on 

 stratified flint-gravel and sand. It commences at Grange Chine, 

 the easternmost patch being on tiie east side of the chine, near 

 Brixton Mill. On the west side of the chine, a slip shows brick- 

 earth, 5 feet thick, resting on 3 feet of gravel, and in the field 

 close by is a shallow pit i'rom which bricks were made for the 

 viaduct of the Military Road. These deposits seem to have been 

 laid down by the stream which now runs in Grange Chine, at 

 the point where it joined the Yar, for at the cliff close by 

 they spread themselves westwards, and attain r. great thickness. 

 Remains oi Elepluts primiffenhis have been observed at a point 

 100 yards east of Grange Chine at 60 or 70 feet above the sea 

 (Codrington, op. cit). 



The sections seen in the cliff between Grange Chine and Chilton 

 Chine ai-e as follows : — 



400 yards iccst of the Stream of Grange Chine. 



Feet. 

 Brick-earth - - - - - - -4 



Gravel .„....- 4 — 5 



Loam, dark and clayey in parts, witli bands of flint gravel, 

 containing some ferruginous sandstone - - - ' 18 



27 



250 yards tvest of tlie precediny Section. 



Feet. 

 Brick-earl h - - - - - - -2 



(travel and loam - - - - - - -7 



Blue silt and clay, with fragments of wood - - - 4 



Gravel and sand - - - - - - -6 



19 



Near Chilton CI tine. 



Feet. 

 Brick-earth, thinning away near the chine - - - 6 



Gravel - - - - - - - -8 



14 



Four hundred yards to the west of Chilton Chine the cliff rises 

 a little in height, and is bare of gravel for a distance of 300 yards. 

 This slight rise, like those referred to in the description of the 

 Plateau Gravels (p. 218), evidently formed the foot of the slopes 

 which enclosed the Yar valley on the south. In observing the 

 thinning away of the river deposits against the slope it will be 

 noticed that tlie brick-earth passes beyond the limits of the gravel, 

 so as to rest directly on the Wealden Beds, before it also thins out. 



There are likewise variations in the thickness of brick -earth 

 due to erosion, for the small stream which now follows the old 



