414 MESSRS. H. W. MOJ^CKTON AND E. S. HERRIES 



The Goldsworthy-Hill railway-cutting is well known (see Prestwicb, 

 Q. J. Ct. S. vol. iii. p. 382). Close by, a little south of the railway, 

 a road-cutting shows a good section of the junction between the 

 Middle and Lower Bagshots. 



ft. in. 



1. Green sand (Middle Bagsbot) 5 



2. Saudy clay, weathering wbite, about 4 



3. Reddish and grey clay, becoming hardened by exposure, 



containing concretions and stalk-like vegetable impres- 

 sions, about 12 



4. Reddish clay, very well-marked bed, forming the base of the 



Middle Bagshot , 9 



5. Light-yellow sands (Lower Bagshot), more than 18 



The bedding is apparently conformable throughout; but the 

 line of division between beds 4 and 5 is very distinct. 



The new section on the South- Western Railway between Walton 

 and Wey bridge stations has been too fully described by Mr. Hudles- 

 ton (Q. J. G. S. vol. xlii. p. 147) to require more than brief notice ; 

 and therefore, while reserving any opinion as to the evidence of 

 unconformity between the Bagshots and the London Clay, we will 

 only observe : — 



1st. That the Bagshot beds there exposed are undoubtedly Lower 

 Bagshot, as the Middle Bagshot green sand appears high up in St. 

 George's Hill close at hand (loc. cit. p. 170, fig. 8). 



2nd. That the Lower Bagshot sands contain : — 



{a) Laminae of clay, and at one point a thick bed of laminated 

 clay (the " Blue Bagshots "). 



(&) At the base beds of rather coarse sand, remarkably free from 

 ochreous or other investment (loc. cit. p. 161). 



(c) A few green grains, but nothing which could be termed a bed 

 of green sand. 



{d) Numerous woody fragments, at least in one place. 



Concluding Remarks. 



We think that the evidence adduced in this and in our two 

 former papers, already referred to (Geol. Mag. dec. ii. vol. viii. 

 p. 171, and Quart. Journ. Geol. Soc. vol. xxxix. p. 348), warrant us 

 in drawing the following conclusions. 



1. Pebble-heds. 



a. In the Upper Bagshot Sand pebbles are very rare, though 

 there is an instance of their occurrence in the highly fossiliferous 

 bed at Tunnel Hill (Quart. Journ. Geol. Soc. vol. xxxix. p. 352). 



h. At the base of the Upper Bagshot Sand a continuous pebble- 

 bed is usually, if not always, found. 



c. In the Middle Bagshots small pebble-beds occasionally occur. 



d. In the Lower Bagshot Beds there are a few small and very 

 irregular lines of pebbles at different horizons. (Instances at 

 Virginia W^ater and Bracknell are noted.) 



