150 
to the west at an angle of 25°, whilst in the southern part, 
where it is softer, it dips in the same direction at an angle 
of 16°. Owing to the covering of drift, the limestone is not 
seen nearer to the mill, hut it probably extends further in 
that direction. At a short distance below the mill, dark- 
coloured laminated shales are seen in the bank on the 
roadside, dipping apparently at an angle to the N.N.W. We 
then come to the rocks at the end of the Green. They 
appear to run in an east and west direction, and are not 
now exposed for more than twenty yards. From north to 
south they may probably extend about forty yards, but 
certainly for more than half of that distance, towards the 
beck, they are not now seen until the land rises on the bluff 
south of the beck, where they reappear as a reddish and 
bedded trap ash, having an east and west direction, and 
dipping N.N.W. at an angle of about 6.0°. This ash is 
succeeded by a coarse breccia of a few yards in thickness, 
so far as exposed, which dips .slightly north of west, at an 
angle of 25°, and then is covered up by grass so as not to 
be seen, but no doubt, from sections in the adjoining lane 
and borings made on the rise of the strata, dark-coloured 
shales occur again, and the dyke most probably intrudes 
through these shales, which are in every respect like lime- 
stone shales, but no organic remains were observed in them 
so as to make us certain of their geological age. 
Returning to the north side of the beck, nothing is 
exposed of the district west of the hard rocks seen on the 
Green, owing to the thick covering of drift in that direc- 
tion; but Mr. Hodgson has proved, by a series of bore- 
holes, the occurrence of upper permian sandstone, red 
shale, and limestone shale — the first to the S.W., the 
second to the west, and the third to the N.W. of Gleaston ; 
and Mr. Ashburner has proved limestone shale and lime- 
stone in bores to the E. and N.E. of the locality where the 
rock is found. 
