128 
EFFECTS OF 
At the Burton end of the field, the beds appear gradually to vanish, 
not cut off by any dyke or fault, but thinning off to nothing. Mr. 
Hodgson was particularly struck with this circumstance in the crow 
coal, while driving a level, for this bed gradually augmented in the 
level from a mere trace to eighteen inches, its usual thickness. The 
other thicker coals vary in the same manner and in the same direction. 
Hence it appears probable that toward the west the limits of this 
coalfield are nearly those of the original deposition. 
I he deep coal is remarkable for having two thin layers of the finest 
light blue e pipe-clay’ running through it quite parallel, with surprising 
uniformity, and enclosing between them a thin layer of the purest ‘jet 
or cannel coal.’ Thus, 
Soapstone. 
Roof coal left until the pillars are removed. 
Top coal. 
Clay one foot thick. 
1 J et coal’ two or three inches. 
Clay one foot. 
Bottom coal. 
Ironstone is found at Ingleton and Burton, in layers of nodules and 
in huge blocks scattered through the ‘ eighteen yards soapstone,’ some 
five or six yards in circumference, and containing in many cases remains 
of plants. Few specimens of shells have been found, but abundance of 
ferns, stellate and other plants, in the soapstone, especially where it 
approaches the deep coal. Charcoal and pyrites lie in the coal. The 
dip of the coal is north-east constantly. 
It will be perceived that the uppermost strata of the Burton sinkings 
are marked red marl and red sandstone ; these beds are laid conformably 
on the coal measures, but not interstratified with them : no red breccia 
like that of W esthouses, occurs in the pits. The crow coal rock assumes 
toward the outcrop a red colour ; and it is remarkable that the miner’s 
prejudice of ‘ red rock cutting off the coal’ has extended even to this 
solitary basin. 
