440 Scientific Proceedings, Royal Dublin Society. 



Leivagh (Holy cross). A little north of Tlmrles. — Dark-grey ; 

 semi-compact ; a very superior stone for all fine work. This ap- 

 pears to have been the stone with which Holy cross Abbey was 

 built. 



Castle Meadow. One mile from Thurles. — Grrey; free work- 

 ing ; very good for dressed work. 



Ballinacurra. Four miles from Clonmel. — Dark greyish-blue : 

 coarse and earthy beds ; rather difficult to work, and more suitable 

 for rubble than dressed work. 



Lisbunny. Near Nenagh. — Dark- blue, compact ; earthy ; in 

 general not difficult to work. Some beds are more argillaceous 

 than calcareous. 



Loughalton. Two miles from Nenagh. — Dark-blue to blackish ; 

 some beds lighter, and greyish ; works easily. 



Loiighorne. Three miles from Nenagh. — Variable in colour; 

 shades of light- grey, dark- grey, and blue ; in general compact ; 

 the blue stones very earthy ; works easily. 



Ballinillard. Near Tipperary. — Grrey ish- blue. A light-coloured 

 magnesian limestone lies below the blue ; works well. 



Portland. — Near to Portumna Bridge. Dark-blue to blackish ; 

 earthy ; in part shaly ; large blocks can be raised. Used exten- 

 sively in the works on the Shannon. In this portion of the barony 

 of Lower Ormond the rocks are of the Calp type, and are not in 

 general suited for cut-stone purposes. 



In general very good lime ; some dark- coloured. Some of the 

 Calp beds either will not burn, or will do so with difficulty. 



Tyrone. 

 In this county are found Cretaceous, Carboniferous, and Meta- 

 morphic limestones. The White Limestone (Cretaceous) occurs to 

 the north-east, near Coagh and Stewartstown ; the Carboniferous 

 occupies more or less scattered and semi-detached tracts ; while 

 the older limestones are found in bedded masses among the meta- 

 morphosed rocks of Ordovician and Cambrian (?) ages in the 

 north-west of the county. Dolomyte, containing Permian fossils 

 like those at Cultra, Belfast Lough, Co. Down, has been found at 

 Tullyconnel, near Ardtrea, a mile to the west of this place ; and 

 in sinking a coal-pit at Templereagh, adjoining the Annaghone 

 colliery. 



