the two beds of limestone a, b. The thirty feet bed of Staffordshire coal, c. is seen cropping out near the foot of Wren's Nest Hill. B. the arrangement of the limestone strata at Dudley Castle Hill. D. a hill, capped with basalt. In this section the proportion of distance has been disregarded, for the same reason as in Plate 2. fig. 4. PLATE IV. Fig. 1. Arrangement of the strata from Sheffield in Yorkshire to Castleton in Derbyshire. (See page 77.) Fig. 2. Coal strata, arranged in basin-shaped concavities, and intersected by a fault. (See page 152.) N.B. By an error of the press, it is referred to Plate 3. Fig. 3. Coal strata thrown up by a broad dyke. (See pages 153 and 154.) Fig. 4. Metallic veins. a a. a vein divided by the vein b b. c c. a pipe vein. Fig. 5. Metallic veins in limestone, cut through by toadstone. PLATE VI. Outline Map of the Geology of England and Wales, and a section of the Vale of Thames. PLATE VII. Fig. 1. A section of England through Durham and Cumberland. The remaining figures in this plate are sections and ground plans of metallic veins, (see Chapter XVII.) and a group of columnar trap-rocks. WOOD CUTS. The Volcanic Mountain of Pariou Fall of Mont Grenier page 360 page 429 DIRECTIONS TO THE BINDER. The Gigantic Trilobite, to face the Title. |