MODE V. LIME-SLATE. 471 



granular and brilliant, as it appears in primitive 

 mountains. Sauss. 1234. 



Aspect 2. Common lime-slate. From Gib- 

 raltar. 



In layers of different colours, from Sweden. 



With chert, from Derbyshire. 



A fine lime-slate, of a bluish grey, the leaves 

 being very thin and inseparable. Sauss. 2047. 



A lime-slate, with quartz and mica, near Ville 

 Neuve, on the river Doire. Ib. 955. 



Dr. Kidd has given the following interesting 

 account of a quarry of this kind of stone, if he has 

 not mistaken calcareous sandstone for limestone, 

 a mistake which riot unfrequently occurs. He 

 calls the substance calcareous slate, or flag-stone ; 

 while the latter name is commonly applied to a 

 schistose sandstone, either calcareous or argil- 

 laceous. The limestone of Pappenheim, in Ger- 

 many, rises from the quarry in thick tables, serving 

 at once for pavements, gravestones, or similar 

 purposes, and certainly belongs to this kind, as 

 must the following, if Dr. Kidd's description be 

 exact. 



" There is a very extensive quarry at Stones- Quarry of 



J Stonesfield. 



field, near Woodstock, the limestone of which has 

 the property of being easily separated into la- 

 minae by mechanical means, or even by the action 



