PROCEEDINGS, 1871 — 1877. 
353 
ferous Limestone, which may also be seen a little lower down in the 
banks of the river. They are also seen on the banks of a small brook 
flowing into the Luue, two miles north of Kirby Lonsdale, and in 
Barbon Beck, near the railway station. In each instance these con- 
glomerates are bounded by faults. Two miles from Sedbergh, in the 
valley of the Rawthey, good sections may be seen. The red-beds 
occupy a cliff, 50 feet or 60 feet high, resting unconformably on the 
Coniston grits, and does not, in this locality, pass into the carbon- 
iferous limestone. Xear Kendal, there are several patches, as well as 
at Tebay and Shap, where the series may be seen in ascending order 
by proceeding up the Birk Beck. In this series the lowest beds are 
of a red colour, gradually changing upwards to a fine whitish sub- 
stance marked with dark spots. The whole series is about 270 feet 
in thickness. At Mell Fell, near Ullswater, the beds attain a thick- 
ness of 1,600 feet and 1,700 feet; and Mr. Goodchild, has recorded a 
series, about 2 feet in thickness, of these rocks east of the Penine 
fault, near Kirby Stephen and Brough. In all these localities, the 
red conglomerates rest upon, but are unconformable to the L'pper 
Silurian rocks, and pass upwards into the Carboniferous Limestone. 
They probably represent a part of the waste of the old Silurian 
region before the deposition of the Carboniferous Limestone. Mr. Bird 
considers that they may indicate glacial action, but the absence of 
scratches on the stones also points to their having been subject to 
the action of water before being finally deposited, and it does not 
appear improbable that they may have formed beaches whilst the 
mountain limestone was being accumulated in the deeper waters 
adjoining. 
Professor A. H. Green gave the result of his investigations on 
the variations in thickness and character of the Silkstone and Barnsley 
Coal Seams in the southern part of the Yorkshire Coal-field, and the 
probable manner in which these and similar changes have been pro- 
ducecl. In the southern part of the Yorkshire Coal-field, the Silkstone 
coal maintains a fairly constant character, it consists of two beds, 
each averaging 2 feet 6 inches in thickness, separated by a band of 
dirt. The latter occasionally swells out to a considerable thickness. 
Near Cawthorne, additional dirt partings set in and break up the coal 
