11 
thick gritstones, with their intervening shales, cover the 
whole country ; the limestone shale itself being exposed only 
for a short distance around Tintwistle. Mr. Morton says 
" that the Barnsley line would possess the advantage of 
having the millstone grit and flagstone strata beautifully 
illustrated by the great tunnel, and sinkings, and cuttings on 
the railway near Penistone ;" but in fact only one of the two 
beds of millstone grit will be sunk through in the deep shaft 
at Saltersbrooke ; the tunnel at this place commencing at the 
top of the lower grit. The whole of the millstone grit is 
therefore not exhibited. From the top of the railway shaft, 
which commences in the fourth grit, to the flagstone, is a 
thickness of strata of 200 yards, and I consider it of the 
greatest importance to have a correct section of it ; because 
it so well corresponds with strata on the Lancashire side. 
But unfortunately the full thickness of not even the flagstone 
itself is shown, as the railway crosses it by a viaduct, on the 
south side of Thurlstone gap, and on the south of Ingbirch- 
worth, where the line crosses, it is not worked, so that 
neither it nor any of the inferior beds are illustrated at all. 
Again, from the top of the flagstone to the Silkstone coal, 
the distance is 160 yards; but neither the Bowling ironstone 
(which I shall prove extends south of the line of the section) 
nor the Whin Moor coal, will be crossed where any thing is 
known of them at the point of intersection, so that in fact 
there will be not only a distance of five or six miles from the 
flagstone to Cawthorne village without a single coal or rock to 
be delineated, but also from the flagstone to the tunnel three 
or four miles in addition similarly circumstanced. Mr. Morton 
again speaks of the Wortley and Bradgate rocks containing 
the valuable and important beds of coal called the Flockton, 
Park Gate, and Silkstone, to be clearly exhibited by sinkings 
at Darton ; but allow me to ask him where the Wortley rock 
is to be found north of Banks Hall, and where on the line 
of section ? and as to the Bradgate rock being well exhibited, 
