224 BR0WELL AND ELRKBY ON MAGNESIAN LIMESTONE 



hard crystalline and greyish concretions, and druses; unfossili- 

 ferous. Forms a thick bed about ten feet thick below the " Main 

 or Honeycomb" stone. Is not used for any economical purpose. 



ANALYSIS. 



Carbonate of lime , 52-10 



magnesia 44'04 



Sand, clay, oxide of iron, &c 273 



Water, &c 1-13 



100-00 

 No. 43. Locality— EULWELL QUARRY. 



GREAT MARL BED, BOTTOM. 



Lithological Characters. — Similar in character to the preceding 

 specimen. 



ANALYSIS. 



Carbonate of lime 55-48 



magnesia 40-92 



Sand, clay, oxide of iron, &c 3-04 



Water, &c 0-56 



100-00 

 No. 44. Locality— EULWELL QUARRY. 



"WHITE STONE." 



Lithological Characters. — Grey, hard, and sub -crystalline, in 

 thick beds ; unfossiliferous. Eorty feet thick. 



ANALYSIS. 



Carbonate of lime 94-89 



magnesia 1*71 



Sand, clay, oxide of iron 2-60 



Water 0-80 



100-00 



"When burnt it forms a good lime for agricultural purposes, 

 for which it is extensively burnt at the Eulwell and Southwick 

 Quarries. 



