1872.] RAMSAY RIVEE-COTJRSES OF ENGLAND AND WALES. 149 



Fig. 1. 



Geological and Eivor Map 

 of England and Wales. 



SCALC OP MILES 



1 8. Alluvium, Drift, &c. 

 17. Crag and Eocene. 

 16. Cretaceous. 

 15. Wealden. 



I I 14. Oolitic strata. 



L^— irj 13. Liassic strata. 



[M-iliMI 12. Keuper Marl &c. 



I^^SI II. Bunter Sandstone. 



Trias. 



I^^^l 9- Rothliegende, Permian. 



^IBi S- Coal-measures. ] 



I 

 l^ml 7. Millstone-grit. 



^^J 6. Mountain-limestone. J 

 |ii|i||iiiii||| 5. Devonian. 



^^ 4. Upper I . 



^ Silurian. 

 1^^ 3- Lower J 



I^^M 2. Cambrian. 



! Carboni- 

 f ferous. 



■iiiliil 10. Magnesian Limestone, Permian. \mW\ i- Granite &c. 



VOL. XXVIXl, PART I. M 



