DESCRIPTION OF THE SECTIONS. 



723 



the syenite has altered and dislocated the strata in contact, and also exposing a regular 

 ascending development of Silurian Rocks, from the base of the Caradoc Sandstone to the Lud- 

 low Rocks inclusive. On the west are great undulations of the Wenlock Limestone, which, 

 rising in domes near Ledbury, is flanked by a thin ridge of Ludlow Rock. As in the previous 

 sections, the Old Red Sandstone lies to the west, the New Red to the east. See pp. 183, 411, 

 415, 423. 



Fig. 9. Transverse section across the valley of Woolhope, showing a regular and unbroken succes- 

 sion in ascending order, on both flanks, from a nucleus of the Caradoc formation through the 

 Upper Silurian Rocks to the Old Red Sandstone. 



In this section the only member of the Caradoc formation visible is the impure limestone (on 

 which the village of Woolhope stands) forming the stratum above the sandstone. See 

 pp. 427 et seq. 



Fig. 9 b. Second traverse of the valley of Woolhope near its centre, to show that with a greater 

 amount of elevation, the Caradoc Sandstone, properly so called, is exposed in the culminating 

 point of the central dome (called Haugh Wood), the impure limestone being there denuded, 

 though well exposed on its lower edges. The Wenlock and Ludlow formations are seen in 

 their regular places, but on the western face they are highly inclined and fractured, and the 

 junction with the Old Red Sandstone is obscured by gravel and silt in the denudation of the 

 Wye. See pp. 427 et seq. 



Fig. 10. This section is merely a repetition of the same phenomena as in f. 9., and Was engraved 

 through inadvertence. 



Fig. 11. Low dome of Upper Silurian Rocks at Gorstey Common, marking the prolongation of 



the Woolhope anticlinal. See p. 442. 

 Fig. 12. From Newent to Aston Ingham, showing how the Woolhope and May Hill anticlinal is 



marked by upheaved and broken masses of Wenlock Limestone. 



The thin and poor coal field of Newent is seen on the east, overlaid by New Red Sandstone. 



See p. 442. 



Fig. 13. Traverse of the same anticlinal at May Hill, from the New Red Sandstone of Huntley to 

 .the coal basin of the Forest of Dean, exhibiting a succession in ascending order from the Ca- 

 radoc Sandstone to the Millstone Grit near Mitchel Dean. See p. 443, 445. 



Fig. 14. Section showing the nature of the same axis in a very diminished form at Flaxley, where 

 the May Hill ridge subsides, flanked by the New and Old Red Sandstones. See p. 444. 



Fig. 14 bis. Arch of Old Red Sandstone near Newnham, marking the continuation of the same anti- 

 clinal. See p. 445. 



Fig. 15. The same anticlinal, at Haydon Green, south-west of Newnham, marked by an upcast of 

 Ludlow Rock. See p. 445. 



Fig. 16. The same anticlinal, as indicated by an arch in the Old Red Sandstone of the Milk-maid 

 Rock, on the right bank of the Severn. See vignette, p. 446. 



Fig. 17- The same anticlinal, as it reappears at Purton Passage on the left bank of the Severn, 

 where a low dome of Upper Silurian Rocks throws off the Old Red Sandstone to the south and 

 north, flanked in the latter direction by lias in an unconformable position. See p. 454. 



Fig. 18. General transverse section of the Tortworth district, Gloucestershire, from the inferior 

 oolite of the hills above Wotton-under-edge to Aust Cliff on the Severn. 



This section shows that the axis of elevation, which is traceable in a single line from Wool- 

 hope to Purton Passage, here branches off into two lines, both being marked by the protru- 



