90 
SECTIONS TO CONNECT THE LANCASHIRE 
rock and the flagstone ; commencing at Sheffield, and going north up 
to the Calder. It appears that at Sheffield there are in that thickness 
four beds worked ; further north, at Silkstone, there are three beds ; 
but if a line be drawn down Clayton valley to near Chevet Hall, there 
are on the south side of this line as at Whitley Hall no less than 
nine beds worked, some of which are entirely different deposits, and 
others are continuous from one part of the Coal-field to the other. 
I mean to run over the country on the south side of the Calder after 
returning from Manchester ; and there are two or three difticulties 
which, perhaps, you could assist me in solving. 1. George's paper 
must be wrong at page 163, where he says that the Mirfield Moor Coal 
is only 52 yards above Royds Coal ; that the Mirfield Moor Coal is, 
I believe, identical with your Middleton Main Coal, and is the Lepton 
Edge or Blocking Coal of Flockton ; and it is impossible, from a view 
of the country, that it can be only that distance above the Royds Coal. 
2nd. Can you trace, as he says, page 165, the Stoue Coal, or Upper 
Flockton, by Adwalton, through Birstall, Morley, Batley and Dewsbury, 
and can you obtain for me any section through it at any of the first 
four mentioned places ; at Dewsbury, or rather Thornhill, I have a 
section through it ? 3. There is another difficulty about the Thornhill 
Lees Rock, which, if you could determine for me, would save much 
trouble. This rock is not known in any of the Silkstone sections, or 
further south as in Lord Fitzwilliam's section. It is not the Bradgate 
Rock, for this latter lays immediately above the Parkgate Coal of 
Silkstone, and is certainly the CroAv Coal of Flockton, — there is no 
doubt of this — and George says, page 165, ' that 50 yards above (the 
Cromwell Coal) is a coal of very variable thickness and quality, in 
some situations it is 9 feet, &c., it occurs at Daw Green, and is the Two 
Yards Coal of Birkenshaw and GomersalL' Now, query, is the 
Gomersall Coal the Crow Coal (or Floating bed, or Lousey bed, for 
they are all one) of Flockton, and is the Gomersal Coal the first coal 
of your section, ' got formerly for the ironstone above it ? ' If it is 
not, the rock in your section is not the Bradgate Rock. 4. Can you 
get a section above your coal near you, so as to see what has become 
of the Old Flockton beds? I doubt that Coal in the boring, page 186-7, 
at Simpson's Spring, being the Upper Flockton. 
