99 
THE PALAEOBOTANY OF THE MIDGLEY GRIT. 
JAMES WALTON 
( Technical College, Huddersfield). 
The ‘ Main Third Grit ’ or bed C of the Millstone Grit series 
is referred to as the ‘ Midgley Grit ’ in the Midgley district, 
where it consists of a coarse grit having a thickness of about 
80 ft. Further south a shale parting is developed and in the 
Colne Valley, where this shale bed has a thickness of 20 feet, 
the grit is termed the “ Pule Hill Grit.' 
At Sowerby are quarries exposing about 45 feet of grit 
which have yielded many plant remains in the past and the 
following have been recorded by Kidston. 1 
Pteridospermae and Filicales. 
Alethopteris lonchitica Schloth. 
Mariopteris nervosa Brongt. 
Neuropteris heterophylla Brongt. 
Neuropteris gigantea Brongt. 
CORDAITALES. 
Cordaites principalis Germar. 
Artis approximate Brongt. 
Equisetales. 
Catamites suckowi Brongt. 
Lycopodiales. 
Lepidodendron aculeatum Sternb. 
Lepidodendron obovatum Sternb. 
Sigillaria tessellata Brongt. 
Sigillaria scutellata Brongt. 
Halonia tortuosa L. and H. 
Siigmaria ficoides Sternb. 
Further south, at Krumlin, a thin shale-parting occurs, 
but the flora is similar to that at Sowerby. The Lycopodiales 
and Equisetales predominate and, of these, Lepidodendron 
rimosum and Calami tes suckowi are the most abundant. The 
following have been collected : — 
Pteridospermae and Filicales. 
Diplotmema sp. 
Equisetales. 
Catamites suckowi Brongt. 
Lycopodiales. 
Lepidodendron obovatum Sternb. 
Lepidodendron aculeatum Sternb. 
Lepidodendron rimosum Sternb. 
Sigillaria sp. 
Bothrodendron sp. 
With the increasing thickness of the shale-parting there 
is also an increase in the number of Equisetales, Filicales and 
Pteridospermae. The latter are chiefly found in the shale- 
parting below a marine band which shows a remarkable 
absence of Pterinopecten and goniatites. The plants collected 
from the Slaithwaite area are : — 
Pteridospermae and Filicales. 
Mariopteris acuta Brongt. 
Neuropteris schlehani Stur. 
Sphenopteris sp. 
Lycopodiales. 
Lepidodendron rimosum Sternb. 
The above were collected 
Equisetales. 
Catamites undulatus Sternb. 
Catamites carinatus Sternb. 
Catamites suckowi Brongt. 
Cord aitales . 
Artisia sp. 
from Bar House and Shroggs 
1933 May 1 
