Ill 
slightly of the colour of the marl, of which it appears to be 
partly composed. 
The conditions under which the series of beds known as 
the Permian Marl were deposited appear to have been 
subject to considerable variation, for in addition to the 
fossiliferous and calcareous bands, beds of sandstone 
occasionally occur. One of these beds, as shown in the 
section, is 15 feet thick, the dip of which agrees with that 
of the marl. After passing through several feet of marl, 
sandstone is again reached, and this is succeeded by sandy 
marl, with seams of fine hard marl. In this rock the 
heading at present ceases, but at a distance of about 120 feet 
to the west the heading driven from the next shaft is in 
sandstone, with a few pebbles. Then comes a band of fine 
marl and sand about 14 inches thick, after which sandstone, 
with numerous pebbles, is penetrated for about 200 feet. 
With the exception of very small faults, no break of 
importance has been observed, but the variable conditions 
suggested by the frequent changes in the marl appear to be 
brought to a close by the 14 inch band of marl and sand, 
and the immediate appearance of sandstone with pebbles, 
without any perceptible change in the dip. 
The fossiliferous Marl has not previously been described 
as having been observed near Stockport : in fact, according 
to the Geological Survey Map, the marl is absent at Sandy 
Lane. A band of marl 25 feet thick is mentioned as 
occurring at Hope Hill, three-quarters of a mile S.W. of 
Coronation Street, but the surveyor accounts for its appear- 
ance by the occurrence of a large fault, supposed to be a 
continuation of the great Irwell Valley Fault. We have 
seen the characteristic Permian Sandstone, with the large 
rounded grains, at this point, near which the Pebble beds 
again appear, overlying the 25 feet of marl. Amongst the 
Pebbles found in the sandstone, both above and below the 
14 inch marl band, the following rocks have been identified : — 
