408 



INTENSITY OF THE ELEVATORY FORCES. 



as Newcastle Emlyn, the river Cothi running in similar breaks of the strata, some of 

 which strike east and west j but these are rare exceptions to the prevalent south-westerly 

 direction of that slaty region. (See Map.) 



Let those who are incredulous as to the intensity of the forces employed in pro- 

 ducing the disruption and contortion of the ancient strata, examine for themselves the 

 tract between the valley of the Towy on the east, and the coast cliffs of Pembrokeshire 

 on the west, and I have little doubt that, whatever may have been their preconceived 

 theory, they will come away convinced, that such phenomena could have resulted only, 

 from action of much greater power than any which has been in operation during the 

 historic asra. 



To what extent the evidences here adduced may sustain some of the views of M. Elie 

 de Beaumont, in respect to the age of these directions, will be considered, when all the 

 phenomena bearing upon this subject in other tracts (Hereford, Worcester, Stafford, 

 Gloucester, &c.) have been described. I will then endeavour to generalize the appli- 

 cation of these data, though in the meantime I may observe, that the east and west 

 strike of South Pembroke is not a mere local phenomenon ; since it forms the major 

 axis of the South Welsh coal basin, and the tract affected by it is nearly one hundred 

 miles in length. (See Map.) 



