454 



THE BEITISn ISLES. 



over £43,000,000.* At present this quantity is very nearly equal to what is 

 raised in all the re.st of the world, but the titne has not lung- passed since the pre- 

 ponderance of England as a coal-producing country was still more marked, for in 

 1860 the British Islands yielded fully two-thirds of all the coal raised throughout 



Fig. 2'2!i. — The Cauboxiferous Formation hefoue Denudation. 

 Aeeonliiiij to Hull. 



■"v5?r 



0- WofGr 



Carboniferous 

 Formation. 



the world. Hence, though the production has kept increasing, with slight fluctua- 



