212 BK0WELL AND KIKKBY ON MAGNESIAS LIMESTONE 



ANALYSIS. 



Carbonate of lirne 48*40 



magnesia 39-58 



Oxide of iron and alumina 3*26 



Silica soluble in dilute acid 0*26 



Sand, &c 7-80 



Water 1-05 



100-35 

 Iron chiefly as protoxide. Trace of organic matter. 



No. 15. Locality— RYHOPE PIT. 



Lithological Characters. — Grey sub-crystalline limestone, from 

 a half- inch band that occurs in the upper part of the Marl-slate. 



ANALYSIS. 



Carbonate of lime 52-06 



magnesia 38-89 



Oxide of iron and alumina 4-66 



Sand, clay, &c 1*73 



Water 0-80 



98-14 

 Iron chiefly as protoxide. Traces of organic matter and 

 manganese. 



No. 15a. Locality— KYHOPE PIT. 



Lithological Characters. — Brown laminated marl or clay, from 



an inch band that lies between the Marl-slate and the Lower Red 



Sandstone. 



ANALYSIS. 



Carbonate of lime 1'78 



magnesia 1-46 



Oxide of iron and alumina 9 - 33 



Sand and clay 76-26 



Water 9-92 



98-75 

 Traces only of iron as protoxide. Trace of manganese. 



The Marl-slate is evidently a transition deposit from the sili- 

 ceous rock below to the magnesio-calcareous ones above. Near 



