218 BROWELL AND KIRKBY ON MAGNESIAN LIMESTONE 



hard and highly crystalline, granular and saecharoid, massive ; 



nnfossiliferous. 



ANALYSIS. 



Carbonate of lime 69'84 



magnesia 20 - 88 



Sand 2-48 



Water, &c 6-80 



100-00 

 No. 29. OFFERTON, 



QUARRY IN VILLAGE. 



Lithological Characters. — Yellow, compact, soft, thin-bedded; 

 unfossiliferous. 



ANALYSIS. 



Carbonate of lime 40*40 



magnesia 49'22 



Oxide of iron and alumina 1-73 



Sand and clay 4*73 



"Water 200 



98-08 

 Iron chiefly peroxide. 



No. 30. FULWELL, 



SHAFT OF WATER WORKS. 



Lithological Characters. — Yellow ribboned with grey, hard, 

 and compact. Similar in character to No. 26. 



ANALYSIS. 



Carbonate of lime 81*52 



magnesia 7'68 



Oxide of iron and alumina 2" 16 



Silica soluble in dilute acid 1-20 



Sand and clay 4-08 



Water 3-36 



100-00 

 No. 81. Locality— HARTLEY'S QUARRY, 



SUNDERLAND. 



Lithological Characters. — Brown, ribboned with grey, hard and 

 compact, thick-bedded. 



