Meyer— On the Cretaceous Rocks. 15 



sently be shown in treating of the FuUer's-earth of Nutfield) we 

 differ totally as to its position in that neighbourhood. Neither does 

 it occur as an argillaceous deposit either at Guildford or Godalming ; 

 its position being there occupied by layers of regularly stratified 

 sand, mostly of a light ash-colour. The Sandgate-, like the Hythe-, 

 beds, appear in fact to lose their distinctive features in passing 

 westward, the two series gradually coalescing and becoming thereby 

 almost undistinguishable. 



In the Isle of Wight the Sandgate and Hythe-beds may be best 

 observed in the coast-section between Dunnose-point and the middle 

 of Sandown Bay. The former appearing to be represented by blackish- 

 green strata which rise on the shore beneath Knock cliff, and which 

 traversing the lower part of Shanklin and -upper part of Small Hope 

 chines continue visible in the cliffs as far as Little Stairs point. 

 The cliffs thence to Sandown being almost entirely occupied by the 

 representative of the Kentish-rag series. 



4. The Folkestone-beds, the series next in order of succession, 

 and which constitute the " ferruginous, or upper division" of Fitton, 

 although including in their inland course a somewhat complicated 

 series of deposits, exhibit in the Folkestone section but little varia- 

 tion in mineral character, the strata consisting almost entirely of 

 light-coloured sands with irregular concretions of siliceous sandstone. 

 The absence of ferruginous sands below the Gault, which form so 

 conspicuous a feature at Eedhill and Guildford, being specially 

 remarkable. 



In the first twenty feet of strata above the dark " Sandgate-beds " 

 one may however observe, in the occurrence of thin layers of 

 pebbles, a first appearance of those pebbly strata which become so 

 much more conspicuous to the westward,^ and in the layers of semi- 

 indurated argillaceous sand and sandstone, a corresponding equiva- 

 lent to the FuUer's-earth and sandstone of Nutfield. The siliceous 

 concretions^ of a slightly higher level agreeing, also, both in position 

 and in the abundance of their almost solitary fossil (Avicula pecti- 

 nata, Sow.), with the upper stone-beds of Nutfield and with the 

 Bargate-stone of Godalming.^ 



To those who are acquainted with Dr. Fitton's description of the 

 vicinity of Nutfield, it will be evident that we differ materially as to 

 the geological position of the Fuller's-earth, Dr. Fitton placing it 

 near the top of the Kentish-rag series and beneath the Sandgate 

 beds,* whereas it is placed in my section near the base of the Folke- 

 stone-beds and almost on a level with the Bargate-stone of Godal- 

 ming, which is without doubt its true position. 



On a recent visit to Nutfield I carefully examined the outcrop of 

 the strata exposed in the lane-sections to the south of the high road 

 between EedhiU-j unction and Bletchingley, and not only observed 

 the out-crop of the pebble-beds from beneath the Fuller's-earth (of 



1 Geol. Mag., vol. i., p. 249, 



2 Fitton, Trans. Geol. Soc, 2nd ser., vol. iv., p. 108. 



3 Murchison, Trans. Geol. Soc, vol. ii., 2nd series, p. 101. 



* Fitton, Trans. Geol, Soc, 2nd series, vol. iv., pi. x.a, section No. 3. 



