344 



PALEOZOIC TIME. 



2. Coal-measures of Foreign Countries. 



I. Distribution of the Coal-measures. 



The Coal-formation in Europe has great thickness of rocks and 

 coal in Great Britain, much less in Spain, France, and Germany, and 



Fig. 681 A. 



Fig. 681 A, Geological Map of England. The areas lined horizontally and numbered 1 are Silurian. 

 Those lined vertically (2), Devonian. Those cross-lined (3), Subcarboniferous. Carboniferous 

 (4), black. Permian (5). Those lined obliquely from right to left, Triassic (6), Lias (7a),0'dlyte 

 (lb), Wealden (8). Cretaceous (9). Those lined obliquely from left to right (10, 11), Tertiary. A 

 is London, B, Liverpool, C, Manchester, D, Newcastle. 



a large surface, with little thickness or coal in Russia. It exists, also, 



