Vol. 50.] MR. F. CHAPMAN ON THE BARGATE BEDS OF SURREY. 687 



marked ' ferruginous sands (Hythe series),' and terminate most 

 probably in the clayey sands marked ' Sandgate.' 



I may mention incidentally the occurrence of pebbly beds 

 (current-bedded) in Sandy Lane (part of the Pilgrims' Way), 

 leading from Guildford to Compton, which are clearly the uppermost 

 beds of the Bargate series, as, similarly with those underlying the 

 Bargate Stone, they contain waterworn particles of organic origin. 

 Exposures of these beds are seen at the beginning of the lane at 

 the Guildford end, but where the road rises they are overlain by 

 Folkestone Sands with Carstone ; and at Littleton Cross, where the 

 road again slopes down, the pebbly beds recur. At these places, 

 however, the beds with pebbles are seamed with very thin veins of 

 Carstone. Now this, at first sight, appears to conflict with the 

 idea of the Carstone representing the Folkestone Beds proper. 

 After many efforts to obtain a sight of the junction between the 

 Folkestone Sands and the Bargate series (which latter, I consider, 

 are distinguished by the organic waterworn particles contained in 

 them), indications of a junction of the two series were found in the 

 highest part of the lane leading from Sandy Lane to Compton 

 Common, where Carstone resembling that in the Folkestone Beds 

 was seen to run for several feet below them into the Bargate Beds ; 

 and this is easily explained by the fact that the ferruginous veins 

 tend to fill up all fissures in the beds beneath those which are their 

 source. The surface of the Bargate Beds at this place was much 

 eroded. 



IV. Clay-seams in the Bargate Pebble-beds at Godalming. 



In 1827 Dr. Fitton mentioned the occurrence of seams of ' tough 

 clay, like fuller's earth ' in the sand-beds below the Bargate Stone 

 beds at Holloway Hill ' ; and from these I have been able to collect 

 an interesting series of foraminifera (noted subsequently), all very 

 minute, and mostly arenaceous forms. Many of the species are 

 common to both the Littleton and the St. Martha's faunas, from the 

 west and east of Guildford. No specimens of ostracoda were met 

 with. The clay is of a cream-yellow colour, and occurs in seams 

 attaining sometimes as much as 3 or 4 inches in thickness. 



V. Beds below the Folkestone Series in the Horsham Road, 

 south of Dorking. 



The following are some details of the first large exposure of 

 Lower Greensand beds on the west side of the Horsham lioad, 

 within a mile of Dorking : — The lowest beds are ash-coloured sands • 

 these are followed by sands with interstratified seams of tough 

 clay about 2| feet in thickness. The clay on washing yielded a 

 remarkable series of very minute arenaceous foraminifera. The 

 strata with clay-seams are undoubtedly on the same horizon as the 

 Bargate Pebble-beds, and are succeeded by about 9 feet of saud 

 infiltrated and seamed with ferruginous material (Carstone). 



1 Trans. Geol. Soc. ser. 2, vol. iv. pt. ii. (183G) p. 140. 



