72 
direction, i.e., going towards Wakefield, the coal called the 
Warren House probably corresponds with the Barnsley ; it is 
for the most part a mixture of thin bands of coal and dirt, 
never of much value, and frequently absolutely worthless. 
Groin g towards the north-west, the coal, which seems to be 
the equivalent of the Barnsley bed, is called the Gawthorpe, 
a seam from 2 feet to 3 feet in thickness, and of fair average 
quality. Neither the Warren House nor the Grawthorpe 
contain any " hard " coal. 
The writer will now proceed to give a few details of the 
changes which have been broadly sketched out in the preced- 
ing paragraph. I^ear Sheffield, the three subdivisions of this 
coal range as follows (Plate IL, Fig. 2) : — the top soft, from 1 
foot to 1 foot 8 inches ; the hard coal, from 1 foot 6 inches to 
2 feet ; and the bottom soft, from 2 inches up to 1 foot. 
Isorthward, from Eotherham and on to Elsecar, the coal 
considerably increases in thickness, the top ranging from 1 
foot 6 inches to 3 feet ; the hards, from 3 feet to 4 feet 6 
inches ; and the bottom, from 1 foot 4 inches to 2 feet. 
Although these three subdivisions can be clearly separated 
one from another, there is nothing that can fairly be called 
a parting between them. Between Elsecar and Barnsley, 
however, a parting comes in between the tops and the hards, 
called the clay seam band, consisting of clay and a ver}^ 
inferior sort of coal. At Barnsley, the section of the seam 
may be taken as follows: — The top seam, from 2 feet 2 inches 
to 4 feet ; then the " clay seam," ranging from 3 inches to 1 
foot S inches ; then comes the hard or steam coal, from 1 foot 
9 inches to 3 feet 6 inches ; and then the bottom coal, 1 foot 
11 inches to 2 feet 8 inches. 
The seam maintains this character up to Darton, where 
the clay band has very materially increased in thickness, the 
other divisions retaining their normal characteristics as to 
quality and thickness. At Haigh, this coal has been worked. 
