294 
HUGHES : INGLEBOROUGH. 
Bank. It is probably not less than 150 feet in thickness. Above 
the Fell Close Shale there is another limestone, named by 
Phillips the Middle Limestone. It occurs under conditions 
so similar to those affecting the Simonside Limestone that 
its exposures are almost all exactly above those of the Simonside 
Limestone and do not caU for further indication than this — 
that if you climb about 150 feet above any section seen in the 
Simonside Limestone you are almost sure to find a section in 
the Middle Limestone — a circumstance which would lend peculiar 
interest to a careful collection of fossils from each. 
In the shale above the Middle Limestone a coal occurs 
further north, at Lunds Thorn, but I have seen no trace of it 
on Ingleborough. 
I have indicated the probable occurrence of a thin imper- 
sistent bed of limestone about 120 feet below the great sandstone 
of "Farrer's Allotment" and "Top of South House Moor" 
(marked on six-inch map). It is nowhere clearly seen, as it 
occurs in the shale, which has given rise to a gentler slope at 
the base of the crags, and is therefore covered with drift and 
peat and heavy masses of tumble from the sandstone above. 
Its presence is, however, shown by sinkings of the nature of 
swallow holes in one place and by springs in another. 
The shale above, like that below it, contains numerous 
beds of flaggy sandstones, associated with some of which lines 
of carbonaceous m.atter along the north and west flank of Park 
Fell seem to have suggested the possibility of the occurrence of 
a coal seam such as is found at this horizon further north. After 
passing over shales, with an ever increasing slope as we ascend, 
and hard beds of limestone and sandstone projecting here and 
there, like the " throughs " in our north country walls, some 
500 feet above what we have arbitrarily taken as the base of the 
Yoredale rocks, we come to a thick mass of sandstone, which 
gives rise to precipitous crags or very steep slopes covered with 
rough screes of fallen rock. This is the highest and, indeed, 
the onl;^ very important sandstone of the Yoredale rocks in 
this district. The rock is of fairly uniform texture, not very 
coarse, and divided by irregular partings of shale. Ifc is often 
speckled red, probably from rusted grains of iron pyrites. 
