65 
The same great pressure from the S. which thrust the Devonian 
and Silurian upwards and northwards in the plane of the Great 
fault, and which forced the Mountain Limestone and Upper 
Devonian upwards and northwards in the plane of the Boundary 
fault, seems to have had a corresponding effect on the Coal 
Measures in the interior of the basin which were forced upwards 
and northwards in the plane of the so-called “Reversed fault,” 
causing the coal veins to overlap each other. 
Judging from the sections furnished by Dr. Hovelacque, the 
nearly horizontal form of the “ Reversed fault” is rather excep- 
tional, the steep rise to the N. being the prevailing form, the side 
pressure having apparently expended itself on the Continent 
rather by causing the older rocks to overlap the Coal Measures, 
than in forcing the Coal Measures to overlap themselves. 
The same crushing effect is said to be observable beneath the 
“Reversed fault” on the Continent as has been observed in a 
marked degree beneath the Overlap fault of Radstock, and in other 
respects the analogy between them must be evident to all 
observers, although all these physical disturbances on the 
Continent evidently far exceed in magnitude those of this 
country. 
Coat PROSPECTS IN THE S.E. oF ENGLAND. 
In conclusion it need hardly be pointed out that the subject of 
this paper has an interest beyond the mere geological problems 
on which it treats, for it has an important bearing on the question 
of the possible existence of a coalfield under the S.E. of England. 
If on this side the channel there exists a coalfield, broken up 
here and there by elevations of the older rocks, but still forming 
one great coalfield, which is bounded on the 8. by a chain of hills 
extending from the Pembrokeshire coast to Frome. 
And if there is on the other side of the channel a corresponding 
range of Coal Measures extending from Westphalia through 
Belgium and the N. of France to the neighbourhood of Calais, 
E 
