LIFE-ZONES IN THE BRITISH CARBONIFEROUS ROCKS. 



189 



12. Sandstone . 



13. Areuaoeous t^liale 



14. Black sLale 



15. Coal 



lU. Fireclay . 



17. Sandstone 



18. Limestone 



19. SftnJstoiie ami nrenaoeous slmles 



20. Blaok shales 



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21. Limestone (six beds) 



22. Black shale . 



23. Limestone 



24. Sliale 



25. Limestone 



26. Shale 



27. Limestone 



28. Sandstone 



29. Arenaceous shales , 



80. Sandstone 



31. Blaek sh.ale with noilnles 



32. Limestone 



33. Soft black shales . 



34. Limestone 



35. Black shales . 



36. Limestone 



37. Black shale . 



38. Nodular limestone 



39. Blaek shale . 



40. Coal .... 



41. Kireelay .... 



42. Sandstone 



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R 



2 

 4 



2 G 



18 

 (estimated) 



^Hawes Flags 



1 9 



52 

 (estimated) 



8 



15 3 



10 /Simonside Limestona 

 1 U 



1 



2 9 

 4 6 



IS 



6 G 



4 



3 C 



4 9 



3 



1 

 6 

 6 

 2 



2 



6 



