Scientific Proceedings, Royal Dublin Society. 



MEATH. 



In this county there is a considerable area of Ordovician rocks ; 

 but in general the slates are hard and intractable, and not suitable 

 even for ordinary building purposes, as in the neighbouring county 

 of Louth. 



MONAGHA.N. 



In Crieve Mountain there are small slate quarries. Over the 

 greater part of this county the rocks belong to the Ordovicians ; 

 but, as in Meath, the slates are hard and intractable. 



QUEEN'S COUNTY. 



S. W. of Mountrath, in Offerlane parish, there is a slate quarry, 

 as also at Cappard, west of Mountmellick (l. d.). 



SLIGO. 



Trials for slate have been made at Kilmacshalgan, near Dromore 

 West, but without success. 



TIPPERARY. 



In the south-eastern part of the county, in the valley of the 

 Lingaun River, are the Victoria, or Clashnasmut quarries 

 (Kilkenny, ante, p. 85). 



The Victoria Slate Quarries are situated in the townland of 

 Clashnasmut, barony of Slieveardagh, Co. Tipperary ; they are 

 six miles from the town of Carrick-on-Suir, and fourteen miles 

 from Waterford. 



The district in which these quarries are situated is thus described 

 by the late Mr. Du Noyer : — " On the eastern side of Slievenaman 

 Mountain, in the counties of Tipperary and Kilkenny, there is an 

 elevated plateau formed of the Lower Palaeozoic or Lower Silurian 

 slates, with a few associated trappean beds, occupying a space of 

 twelve miles from east to west, with an average width of three to 

 five miles. This is completely surrounded by a barrier higher than 

 itself, formed of Old Red Sandstone, the beds of which are uncon- 



