140 
Sandstone must have had an elevation of 4,500 feet. Accord- 
ing to this, the Silurian may be expected to be found at a 
small depth below the present level of the Severn, and it is 
possible that some portions of it may, upon a close examina- 
tion, be visible. The course of one of the anti-clinals on the 
Eastern side of the Forest, and nearest to the mineral field, is 
fairly represented by the elevated ridge of Blaize Bailey, and 
there, at a distance of about a mile to the West, the Old Red 
Sandstone will be found to dip towards the Forest, or to the 
West on the one hand, and towards the river Severn or in an 
Easterly direction on the other. Former observers, among 
whom may be mentioned Mushet and Maclanchlan, have 
asserted that the Old Red Sandstone dips towards the Forest 
from the river Severn. This may be so, but not in a con- 
tinuous order. 
If we produce a line from Cinderford Bridge through the 
Temple on Blaize Bailey, we shall find that the distance from 
the exterior outcroppings of the Carboniferous Limestone to 
the anti-clinal line referred to is about 1,600 yards. The anti-_ 
clinal line is so well defined at the place named, that it may 
be seen to run nearly in a parallel course to that taken by the 
line of fault before described. LHxisting sections made of the 
strata are, however, too few to enable us to decide the course 
with certainty. The Geological section from Edge Hill, taken 
through Abinghall Church to Taynton House, shows the Old 
Red Sandstone to be much contorted, especially at a point near 
Brimpshill, but no anti-clinal line is shown, although it may be 
expected to run near this place. 
At a distance of about 34 miles from the exterior out- 
croppings of the Carboniferous Limestone, measured on the 
same section, an anti-clinal is shown running under May Hill, 
and the May Hill Sandstone, or Upper Llandovery rocks, are 
consequently much contorted and elevated. The rocks dip 
towards the Forest of Dean and towards the Malverns, the 
Upper Silurian, Woolhope Limestone, Shale, Wenlock Lime- 
stone, and Upper Ludlow beds dipping on both sides of the 
anti-clinal in succession. At the North-Eastern side, however, 
