350 H. W. MOXCKTON ON THE BAGSHOT 



cutting section. The mass of stones is here such as to be worth 

 quarrying. 



An almost precisely similar succession is shown in the series of 

 shallow cuttings on the South-Eastern Railway, near Wellington 

 College Station, which are shown in the annexed cut (p. 351). The 

 following are the details : — 



Section on the South- Eastern Railivay, near Wellington College. 



Gravel. 



B. Light yellow sand, with small patches of green sand, casts of shells, numerous 



but very imperfect, including species of Fusus, Natica, Phorus, Turritella, 

 Voluta, wood, &c. 50 ft. or more. 



C. A greenish sand, with two irregular lines of flint pebbles, and a few pebbles 



of old rock 1 ft. 6 in. 



D. Yellowish sand, iron-sand concretions, and layers, a few casts of Turritella, 



and wood Thickness varies, 2 to 4ft. 



Yellowish, reddish, or greenish sand, with numerous thin lamince of light- 

 coloured clay , About 15 ft. 



[This bed was until recently worked for bricks at Wellington College.] 

 Dark-coloured laminated clay, with an irregular line of flint pebbles. 



3 to 4 ft. 



E. Green sand Thickness not shown. 



F. Dark laminated clay, with a little impure greensand. (This bed is shown 



in a pit at Up wick or Wick Hill near Finchampstead.) 

 Lower Bagshot Sands, yellow clayey sand, with beds of stiff laminated clay, 

 which are worked for brick-making at California near Finchampstead, 

 and are there wrongly marked "Middle Bagshot" on the Geological 

 Map. 



The above examples establish, I think, with sufficient certainty, 

 the succession of the strata in this district ; and the well-sections at 

 Wellington College and the Albert Asylum, Bagshot (Mem. Geol. 

 Surv. iv. pp. 425, 537), are very similar. In all a pebble-bed appears 

 at the top of the clayey beds, and affords good evidence of a break in 

 the series at this point. 



With the exception of the Albert- Asylum well, there is no section 

 through the whole of the upper sandy beds lettered A and B in the 

 table of strata; and it is therefore not easy to ascertain their 

 greatest thickness. That well gives 226 feet above the pebbles ; and 

 I doubt whether this is exceeded in other places. 



In the lower beds of these upper sands numerous green grains 

 occur, either in patches or disseminated through the sand, and casts 

 of shells are to be found in several pits and cuttings. I may men- 

 tion Sandhurst cutting on the South-Western Railway, near Wel- 

 lington College, Caesar's Camp, Easthampstead, a road-cutting about 

 a mile from the Royal Military College, on the Windsor Ride, and 

 the cutting through the spur of the Pox Hills (S.W. R.), from 

 which Prof. Prestwich obtained several fossils. 



There are two very fine sections in the higher beds — the first at 

 Crawley Hill, near Camberley, and the second at Tunnel Hill, on 

 Pirbright Common. 



The Crawley-Hill cutting, on the South- Western Railway, near 

 Camberley Station, is unfortunately overgrown ; but casts of shells 

 were formerly very abundant there, though for the most part ill- 



