206 BROWELL AND KIRKBY ON 1TAGNESIAN LIMESTONE 



No. 1. Locality— RYHOPE PIT. 



Lithological Characters (of specimen analysed). Yellow sand- 

 stone, composed of subangular pieces of quartz cemented by car- 

 bonate of lime. 



ANALYSIS. 



Carbonate of lime 20-48 



magnesia ,, „ , 1-52 



Oxide of iron and alumina 6-16 



Silica soluble in dilute acid - 16 



Sand, clay, &c 72-88 



101-20 



Remarks. — The specimen is from the upper portion of the de- 

 posit, near to the Marl-slate. 



No. 2. Locality— BYHOPE PIT. 



Lithological Characters. — Yellowish grey, incoherent sandstone, 

 formed of coarse, well-rounded grains of quartz : might be de- 

 scribed as an arenaceous oolite. 



ANALYSIS. 



Carbonate of lime 0-39 



Oxide of iron 10-20 



Sand, t%c „ . . 89-33 



Water „ 0-47 



100-39 



No. 3. Locality— CLAXHEUGH. 



Lithological Characters. — Eeddish yellow, incoherent sand- 

 stone, rather fine-grained. From near the top of the deposit 

 (here about eighty or ninety feet thick), adjoining the Marl- 

 slate. 



ANALYSIS. 



Carbonate of lime 0-85 



; magnesia 0-33 



Oxide of iron and alumina 5-13 



Sand and clay 92-13 



"Water 1-53 



9997 



