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APPENDIX. 
Cranley and Horsham turnpike-roads, and follows the latter to 
Pain's Hill. 
The southern boundary is taken hence in a westerly direction 
through the wealden clay, immediately at the base of the lofty 
range of hills commencing at Hascomb Beech, and terminating 
at Bowler Green, near Hindhead. From this point the western 
boundary is formed by an imaginary line through Cosford crossing 
Thursley Common to Elstead, and continued thence over Crooks- 
bury and Puttenham Commons by Hampton Lodge, passing over 
the Hog's Back near Shoeland Farm to the commencement of the 
northern boundary. 
Geological Features of the District. — In noticing these, I 
commence with the northern limit, which is a termination of the 
London clay resting upon the chalk. I am not aware that any 
portion of the plastic clay is to be found within the limits : the 
Bagshot sand, which is so conspicuous, does not approach nearer 
than Romping Downs, about two miles distant. The principal 
feature is the beautiful chalk ridge called the Hog's Back, which 
scarcely exceeds half a mile in breadth. "This remarkable 
ridge of the North Downs extends from Guildford to a point 
about two miles from Famham, and has evidently been pro- 
duced by an upthrow of the chalk, and the breaking off of the 
southern portion of the curve. The inclined position of the re- 
maining side of the flexure is seen at the western extremity of a 
large chalk-pit, between Guildford and Puttenham, where the 
strata dip towards the north at an angle of about 30°. The 
upper beds are very white, with courses of the usual dark flint 
nodules ; and a remarkable feature in this quarry is the distinct- 
ness with which the chalk is divided into masses approaching to 
a rhomboidal figure, by seams oblique to the stratification ; the 
angles of the portion thus formed standing out in the face of the 
cliff', like splinters in the shattered fracture of a crystal." 
Descending its southern side we meet with a naiTOW stratum 
of fire-stone, which "forms a slight projection along the foot of 
the Hog's Back ; the gait, a corresponding depression along its 
whole length," varying in breadth from a few hundred yards 
