﻿Vol. 66.J THE WESTERN END OF THE WEALD. 691 



supply of unrolled flints, which seems to have been so abundant at 

 the beginning of the present cycle round the margin of the area, ma}' 

 be explained in the same way ; for such flints would accumulate on 

 a subaerial peneplain, and if quietly covered by the sea would be 

 available for distribution by the new consequent rivers of the 

 uplifted marine plain. Some may feel inclined to go a step farther, 

 and assume that there was, on the plain, a partial revival of earlier 

 rivers, whose valleys had been imperfectly filled by marine deposits. 

 It may be that a few of the existing rivers have received assistance 

 in this way ; but in the area here examined I see no necessity for 

 such an assumption even as regards the consequent rivers, while 

 in the case of the subsequent streams there is strong evidence 



IV. Bibliography. 



[The numerals in parentheses correspond with those quoted in the text 

 of the paper.] 



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de l'lrlande ' Mem. Soc. Geol. Nord, vol. i, 1876. 



(2) H. Buet. ' Notes on the River Wey ' Quart. Journ. Geol. Soc. vol. lxiv (1908) 



p. 318. 



(3) W. M. Davis. ' The Development of Certain English Rivers ' Geogr. Journ. 



vol. v (1895) p. 127. 



(4) J. V. Elsden. ' On the Superficial Geology of the Southern Portion of the 



Wealden Area' Quart. Journ. Geol. Soc. vol. xliii (1887) p. 637. 



(5) C. Le Neve Fostee & W. Toplet. ' On the Superficial Deposits of the 



Valley of the Medway, with Remarks on the Denudation of the Weald ' 

 Quart. Journ. Geol. Soc. vol. xxi (1865) p. 443. 



(6) G. J. Hinde. 'Notes on the Gravels of Croydon & its Neighbourhood' 



Croydon Microscop. & Nat. Hist. Club, vol. iv (1897) p. 219. 



(7) Rev. A. Ibving. ' Note on the Elevation of the Weald ' Geol. Mag. dec. iii, 



vol. vii (1890) p. 403. 



(8) J. B. Jukes. ' On the Mode of Formation of some of the River- Valleys in 



the South of Ireland ' Quart. Journ. Geol. Soc. vol. xviii (1862) p. 378. 



(9) A. J. Jukes-Beowne. ' The Cretaceous Rocks of Britain ' Mem. Geol. Surv. 



vol. i (1900) 'The Gault & Upper Greensand of England'; & vol. iii (1904) 

 ' The Upper Chalk of England.' 



(10) T. Leighton. ' The Lower Greensand above the Atherfield Clay of East 



Surrey ' Quart. Journ. Geol. Soc. vol. li (1895) p. 101. 



(11) P. J. Maetin. ' A Geological Memoir on a Part of Western Sussex : with 



some Observations upon Chalk-Basins, the Weald Denudation, & Outliers- 

 by-Protrusion ' London, 1828. 



(12) P. J. Maetin. ' On the Anticlinal Line of the London & Hampshire Basins ' 



Phil. Mag. ser. 4, vol. ii (1851) pp. 41, 126, 189, 278, & 366. 



(13) H. W. Monckton. ' On the Gravels South of the Thames from Guildford 



to Newbury ' Quart. Journ. Geol. Soc. vol. xlviii (1892) p. 29. 



(14) H. W. Monckton & H. Mangles. 'Excursion to Farnham' Proc. Geol. 



Assoc, vol. xiii (1893-95) p. 74. 



(15) H. W. Mokckton & W. P. D. Stebbing. 'Excursion to Betchworth & 



Headley ' Proc. Geol. Assoc, vol. xiv (1895-96) p. 124. 



(16) Sir R. I. Mubchison. ' On the Distribution of the Flint Drift of the South- 



East of England, on the Flanks of the Weald, & over the Surface of the 

 South & North Downs ' Quart. Journ. Geol. Soc. vol. vii (1851) p. 349. 



(17) Sir J. Peestwich. ' On the Age of some Sands and Iron-Sandstones on the 



North Downs ' Quart. Journ. Geol. Soc. vol. xiv (1858) p. 322. 



(18) Sir J. Peestwich. ' On the Relation of the Westleton Shingle to other 



Pre-Glacial Drifts in the Thames Basin, & on a Southern Drift, with 

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 (1890) p. 155. 



Q. J. G. S. No, 264. 3 b 





