160 Dr. FiTTON on the Strata below the Chalk. 



ture of the surface, this subdivision is to a certain extent natural, and may be 

 retained with advantage. 



(77.) Valley of the Wealds. — The'beds of sand, sand-rock, and limestone 

 subordinate to the Weald clay, have been traced by Mr. Martin throughout 

 the tract represented in his map of Western Sussex, and I refer to his memoir 

 for an account of them : their place is indicated in the Section, PI. X. a. 

 fig. 5. I have myself observed beds of the same description, — no doubt con- 

 tinuous with those described by Mr. Martin, though I have not traced their 

 continuity, on the opposite side of the Wealden and of the forest ridge, about 

 Ewhurst, and on the east of that village*^. And in the course of the valley 

 eastward, through Surrey and Kent, distinct and almost continuous ridges, 

 apparently produced by the greater durability and prominence of similar 

 strata, are observable from the escarpment of the sands, and are in part ex- 

 pressed in the Ordnance Maps. 



Two, if not three lines of these subordinate strata cross the road which descends from the 

 escarpment of the sands through Ewhurst. 1 . The first is at the foot of a height, which runs from 

 the south of Coneyhurst Farm, through Woodland ; the beds consisting of limestone, (Sussex 

 marble) full of large Paludinae and Cypris. A group, possibly a continuation of this, occurs in 

 Mr. Turner's grounds, north of Forest Green, at Atherley, about two miles east of Woodland, 

 below Leith-hill Place ; but there the stone is greenish micaceous grit, in three contiguous 

 courses, each about 12 inches thick, containing very large Paludinae, Uniones, and stemlike concre- 

 tions, where the stone adjoins the whitish sand, on which it rests. Above Henhouse Farm also, 

 about a mile and a half east of Atherley, a range of high ground indicates the presence of firm 

 bands of stone; and grit is found there, which includes similar Uniones, and a few Paludinae. 



2. A second band, composed of ironshot sand, over variegated reddish brown clay, crosses the 

 road, at the church of Ewhurst, passing thence eastward through Lyefield Farm. The stone-pits 

 of Forest Green seem to be on this line, but they consist of beds of grit including Uniones and 

 Cypris, above yellowish sand, reddish clay, and concretioncl sandstone, with casts of Uniones. 



3. At Bowles's Farm, on the east of Cranley, is a bed of very compact sand-stone, apparently 

 lower in the series than those above mentioned : and the roads hereabouts are repaired with grit 

 from Newhouse, between Cranley and Ewhurst. Stone is also found nearly on the same line east- 

 ward, at Redford and Standling ; and again on the south of Capel (on the road from Dorking, 

 about a furlong north of the 30th mile-stone), is a prominent ridge, with a course of sand, in 

 beds from 2 to 6 inches thick, in light-coloured clay. 



The height last mentioned, near Capel, may probably be the continuation of a ridge which, on 

 the Ordnance Map, begins about 2\ miles to the east of that place, passing from Stand-hill, through 

 Norwood and Horse-hill ; and which (being resumed on the east of the Mole), forms a range nearly 

 parallel to the escarpment of tlie Lower green-sand, — by Lady-farm, about two miles south of 

 Eariswood-common on the road from Reigate to Brighton, Outwood-common, Lostland, south 

 of Gayhouse-farm, and thence, through Hook-stile, to the stream south of Comfort's-Place farm, 

 and Moat farm. On the east of the place last mentioned, the ridges between the Lower green- 



* See the eastern part of the Section, fig. 5. 



