Kinahan — Slates and Clays (Bricks 8fc). 103 



masses, while in the quarry to the west it is much kinder, lami- 

 nated, and compact. 



Elsewhere in the slate areas it is very generally used for 

 walling. 



MONAGHAN. 



A considerable area of this county is occupied by part of the 

 great Ordovician tract, so frequently mentioned already, the slate 

 rocks of which have been described under Gavan. In the towns 

 of Monaghan and Clones these rocks are used, along with lime- 

 stone, for general building purposes, but elsewhere by them- 

 selves. 



In the north part of the county, in the Slievebeagh Series 

 (Carboniferous, ride Sands and Sandstones, p. 593, vol. v.) there 

 are shales locally used for rough walling. 



QUEEN'S COUNTY. 



In this area, as in other parts of the central plains of Ireland, 

 there are slate rocks in the Ordovicians and in the Lower Carboniferous 

 strata, while to the south-east there are Coal-measure shales. 



The general characters of the last are given in the description 

 of the Kilkenny rocks. The slates and shales of earlier formations 

 seem to be only sparingly utilised, the associated grits and sand- 

 stones being preferred. 



ROSCOMMON. 



In this county the slate rocks seem to be of little account, 

 except for farm purposes. 



SLIGO. 



The slate rocks, except in the Coal-measures, have been more or 

 less metamorphosed into schist and gneiss. The schists are used 

 locally for walling and such like. The Coal-measure slates do not 



SCJEN. PROC. R.D.S, — VOL. VI., PT. II. I 



