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Wyke coal field, with its two workable seams, may be said to 
partake of the peculiarities of the proper coal tract and our 
own inferior system, and form the connecting link between 
them. The Shelf coals are heavy, earthy, and one bed is 
encrusted with pyrites, whilst the hard and soft beds of 
Hahfax would be valuable if thicker. 
At Mytholmroyd and Hebden Bridge we come on to the 
Yoredale limestone series, and hereabouts there appear to 
have been considerable uplifting movements, the latter place 
situated upon the anticlinal axis. North and South of these 
disturbed strata. Hiffh Greenwood is one of Mr. 1. Gibson's 
favourite localities for fossil shells, lodged in the plate and 
Nidderdale shales of the alternating grits and thin lime- 
stones. At Widdup and Gorpell is again a marked display 
of Millstone grit, and Great Bouldsworth caps the series. In 
Lumbert's Clough fossil fish are found, and Studley Pike 
completes the Millstone series on the South side of the river. 
Millwood is another source for fossil remains, found, I appre- 
hend, in the Bolland shales beneath the main limestone, or 
uppermost member of the Yoredale rocks. At Foulclough, 
near Whitworth, is a soft bed coal ; and beyond Gorpley, at 
Dalesgate, near Bacup, a hard bed, not unlike the two 
Halifax seams ; whilst near Burnley, in Shedding Clough, and 
Overtown, is a five-foot coal below the gravel, somewhat 
analogous to the Mirfield and Wyke beds. Manchester and 
Leeds, I apprehend, work the same coals, and the fossils of 
the red marl at the first-named place, and in the Garforth 
Magnesian Limestone of the last, are identical. 
When closely examined, our geographical area affords 
ample evidence of having been variously acted upon by dilu- 
vial and oceanic agencies, for it would be diflficult to conceive 
that the small rivulets and atmospheric causes of waste 
would prove adequate to the formation of the valleys. The 
relative elevations of the parish, pleasingly diversified with a 
