168 



ME. W. H. HTJDLESTOIS' OlS A SECTION THEOTJGH 



parison with the section already described. The superficial beds are 

 still well developed, probably 14 feet, but the surface has been 

 messed about so much that this estimate is given with reserve. The 

 Lower Bagshots are still fine soft sands slightly laminated, but in 

 the main resembling the IN'o. 3 type. There is a considerable 

 difi'erence in the development of the Plateau-gravel. In the first 

 place the erosion of the Bagshot surface is very slight — so slight, 

 indeed, that I fancied at first that the gravels (j) of fig. 7) were con- 

 formable and part o£ the Bagshot series. But closer inspection did 

 not confirm that impression. XJcless I am greatly mistaken, the 

 basement-bed of the Plateau-gravel is a somewhat regularly bedded 

 gravel series, but rather variable as to thickness. Certainly there 



Kg. 7. 



-Section about 150 yards east of Haines' Bridge. 



— 



— 



" 



l^ 



— ^ ' - 













7/? ' 





N 





- - 



- 







^ 



o ^ 



^ 



- 



^ 



-V!_ -, 



t 



— -, 



. 





o 



o 



„ 



» - 



^ 





, ^ 



^ 



'= 





'~^:>:^ 



^ {m. Chiefly sand with flints interspersed, a sandy phase of the ordinary 



^ Plateau-gravel. 



'^ n. A sticky white loam, partly bedded, and rather of the nature of the 



^ •{ lower beds of the Middle Bagshots of St. George's Hill. 



S I 0. Coarsish brown sand, bedded, and with ferruginous layers. 

 ^ I p. Fliat-gravel with a large proportion of pebbles rather evenly bedded, 

 Ph I^ not much sand. 



b. Lower Bagshots in situ. 



are places where it seems quite to belong to the underlying Bagshot 

 Sands, whilst there are others where the interpretation would be 

 difi'erent. I ought to say that throughout the cutting I have never 

 seen such a thing as a pebble in the Lower Bagshots. This should 

 be mentioned, because in some places pebbles are stated to be abun- 

 dant, though mostly perhaps in the Upper Bagshots. I should feel 

 disposed to describe the section here as follows : — 



The most curious feature here is the sticky white loam (n) which 

 may be traced for a considerable distance on the left. Considering 

 the mutable character of superficial deposits, the beds j9, o, and n 

 maintain themselves for some distance. In fact j^ seems to be no- 

 thing more than an unusually regular representative of the bedded 



