ON TH:E BAGSHOT beds of THK LONDO^f BA8IX, 



409 



arrangement of beds should not be found where the Middle Bagshots 

 crop out north of Wellington-College Station. Now referring again 

 to fig. 1, it will easily be seen that this must be the case unless we 

 admit Mr. Trving's anticlinal, against the existence of which we 



Fig. 2. — Sections at Upvjiclc (or Wich) Hill and in the California 

 Briclcjleld, near Fincliampstead. (Scale, horizontal, 6 inches 

 to the mile ; vertical, 1 inch to 88 feet.) 



250 feet 

 aboTe O.D. 



200 feet 

 above O.D. . L. 



The sections are too shallow for the dip to be seen; but we believe it to be 

 rerv slight. 



The level of the gi'een sand in the section is shown by star c in fig. 1. 



Middle f 1. Clays with green and white sand beds. About 11 feet. 

 Bagshot. \ 2. Dark blue and reddish clays. 3 feet 6 in. 



J [ 3. Yellow sand. 2 feet or more. 



-p °^^, \ 4. Laminated sandy clay. 10 feet or more, 

 iiagsuot. I ^ Yellow sand. The pit is 3 feet deep. 



have already given our reasons. It will then follow that the sands 

 in the cutting south of the Nine-Mile Eide must be Lower Bagshot, 

 as mapped by the Survey, and not the upper part of the ^Fiddle 

 Bagshot, as Mr. Irving contends. Unless some good reason to the 

 contrary can be found, the beds still further north — that is to say, 

 those of the Wokingham outlier — must also be Lower Bagshot. 



On the southern side of this outlier there is a section on the 

 South-Western Railway, near Tangley, where we find about 10 feet 

 of stratified yellow and white sands, rather ferruginous near the 

 bottom, with seams of pipe-clay and signs of wood. On lithological 

 grounds we have no hesitation in assigning this bed and the whole 

 outlier to the Lower Bagshot for reasons similar to those which we 

 have applied to the other localities. 



At Hazeley Heath, near Hartley Row, the Middle Bagshot clays 

 are worked for bricks. Above the brick-works, at the highest part 

 of the heath, we saw a bed of rolled pebbles, about 4 inches thick, 

 just below, but quite distinct from, the overlying gravels. Below 

 the pebble-bed are yellow and grey sands, full of green grains, and 

 lower down are grey laminated clays, the whole section of Bagshot 

 beds exposed being not more than 3 feet in thickness. We traced 

 this pebble-bed for a distance of about 250 feet, as far as any 

 openings in the surface were to be seen. 



2f 2 



