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common, and they have been 

 described by Mantell, 1 Top- 

 ley, 2 and Dr. Elsden 3 ; but 

 both Topley and thoso 

 who have followed him use 

 almost the same words, 

 namely, that 



' on entering the Hastings Beds 

 country, flints no longer occur 

 either on the surface, or in tlie 

 river-gravel.'* 



However, in the Tunbridge 

 Wells S.ands(Hastings Beds), 

 out of a thousand fields of 

 which I have a record, that 

 have all been thrice tested 

 by means of boreholes to the 

 depth of 3 feet, fifty fields 

 or more furnish abundant 

 evidence of the presence of 

 these brown and red flints. 

 Thej 7 are present over the 

 Wadhurst Clay between Js- 

 field and Buckham Hill, but 

 the boundary of this stratum 

 is faulted. I have only 

 found them to occur as small 

 fragments, and seldom on the 

 older Wealden Beds of the 

 higher levels within the Ouse 

 watershed. 



The field-borings go to 

 show that in the greater 

 part of the area over which 

 the flint is distributed, the 

 gravel seldom occurs within 

 3 feet of the surface in beds 

 of appreciable thickness ; but 

 trial-borings along the slopes 

 reveal considerable deposits 

 of gravel, containing small 



1 ' Geology of the South-East 

 of England ' 1833, p. 28. 



2 ' Geology of the Weald ' 

 Mem. Geol. Surv. 1875, pp. 202, 

 273, 287-88, 292. 



• Q. J. G. S. vol. xliii (1887) 

 p. 646. 



4 See also A. J. Jukes-Browne, 

 'Building of the British Isles* 

 3rd ed. (1011) p. 426; and A. C. 

 Ramsay, ' Physical Geology, &c.' 

 5th ed. (1878) p. 344. 



