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ON THE UPPER CARBONIFEROUS STRATA OF SHROPSHIRE ETC.
found in Triassic strata near Runcorn, and several Calamites in the water-stones of Lymm, near Warrington. Gradually, therefore, I doubt not, the land-surfaces of the period of the dark red sandstone, as well as of the overlying Triassic beds, will be discovered, and the connexion be traced between the plants of the great Carboniferous era and those of succeeding ages.
EXPLANATION OF PLATE I.
A. Diagram sections showing the correlation of Upper Carboniferous or Permian strata. Scale 1 in. to 200 yards.
B. Section of strata from Chirk, Denbighshire, to Ifton Heath, Shropshire. Scale 1 in. to 250 yards.
