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sand. 2nd. Strong bluish brown till, containing rounded 
and angular blocks varying in size of the above named 
rocks. 3rd. Sti'atified beds of sand and gravel, containing 
chalk flints generally yielding entire or fragmentary marine 
shells. 4th. Gravelly clay frequently containing the re- 
mains of shells in greater or less abundance. 
(No. 1.) 
The first named blocks of stone are found more or 
less on the tops and sides of the crescent of hills from 
south of Clulow Cross through Cheshire and Derbyshire to 
Rivington Pike in Lancashire, and further northwards at 
heights varying from 1,000 to 1,400 feet above the Irish 
Sea. They are found on ground higher than deposits No. 
3, at Bull Strang, Yale Royal, and Bugsworth, than No. 
at Bakstondale, and No. 4, at Arnfiekl. They vary in size 
from a hundredweight to several tons, and are probably the 
remains of a bed of till like No. 2, the clay and small 
pebbles of which have been removed by denuding causes in 
the course of a long period of time. 
Bakstondale Section (No. 2). 
At the top of a valley of this name, above Lyme Park, in 
Cheshire, some 1,000 feet above the level of the sea, in sink- 
ing a pit down to the Smut coal, a bed of bluish brown till, 
very full of granites, greenstones, and other foreign rocks, 
many of them weighing several hundred weights, resting on 
broken coal measures, was met with. No fossil shells were 
found in it, and it could not be distinguished from the 
ordinary till found near Manchester, except that the pebbles 
on the whole were larger and more numerous. Many of 
the rocks were striated and polished, whilst others were 
both rounded and angular. The deposit was in a sheltered 
spot, and appeared to be the remains of a larger bed, the 
greater part of which had been removed by denudation. 
At a higher level than this bed of till, detached boulders of 
