AND ASSOCIATED PERMIAN ROCKS OF DURHAM. 219 



ANALYSTS. 



Carbonate of lime 74*64 



magnesia 16*16 



Oxide of iron and alumina 5 '28 



Sand, &c 2*64 



Water 1-28 



100-00 

 No. 32. Locality— DOWN HILL, 



WEST BOLDON. 



Lithological Characters. — Chocolate- coloured, earthy and sub- 

 crystalline, irregularly -bedded ; fossiliferous. 



ANALYSIS. 



Carbonate of lime 83-35 



magnesia 13-86 



Oxide of iron and alumina . ., - 75 



Sand, clay, &c 0-20 



Water, &e 1-84 



100-00 

 No. 33. Locality— PALLION, 



SUNDERLAND. 



Lithological Characters. — Brown and grey ribboned, compact, 

 and thin-bedded. 



ANALYSIS. 



Carbonate of lime 91-04 



magnesia 2-24 



Oxide of iron and alumina 4 - 56 



Sand, clay, &c 16 



Water, &c 2 00 



100-00 



No. 34. Locality— PALLION. 



Lithological Characters. — Greyish yellow, sub- crystalline, and 

 very hard, striking fire easily with the hammer ; in one thin bed. 



