592 Scientific Proceedings, Royal Dublin Society. 



being wrought into flags, and these have been used in Kells and 

 elsewhere. 



Hayestoivn. Fourteen miles from Kells. — Brownish to yel- 

 lowish ; quartz grains ; calcario-silicious cement ; not very durable ; 

 works easily. 



To the north-west of Navan there are some sandstone quarries 

 locally used. 



In the tracts of Coal-measures there are some good stones 

 reported ; but if local use is ignored, none of them have been 

 worked except in the Nobber district, and there only sparingly, 

 as the bad roads and accommodation make the quarries difficult of 

 access. Some of the thin-bedded sandstones, as near Garristown, 

 make good and strong flags ; English flags, however, being easily 

 and cheaply obtained, seem to have prevented their being much 

 worked. 



Cortubber. Near Kingscourt ; greyish- white ; quartz grains ; 

 very little f elspathic cement ; finely granular ; works freely and 

 well. 



Carrichlick. Seven miles south of Carrickmacross. Greyish- 

 white, but unevenly coloured ; silicious grains ; very little cement ; 

 fine-grained ; works freely and well ; large blocks can be procured. 

 Lough Fea House was built of this stone ; used extensively in 

 Carrickmacross. A limited quantity of flags can be raised here, 

 which can be manufactured into hearth-stones. 



Trias. — The "Bed Free" of this area seems to have been 

 very little used, and only locally. 



Sand and Gravel. — Pit sand, excellent for building purposes; 

 is very general ; although sometimes it is loamy. In the cutting 

 for the Meath Railway an inexhaustible supply of sand and 

 gravel suited for road purposes is exposed ; some of it is good 

 manure sand, but is not much used, so much of the county being 

 under grass. 



MONAGHAN. 



Occupying all the central . portion of the county are similar 

 Ordovicians to those that have been described in Armagh and 

 Cavan, which lie respectively to the north-east and south-west. 

 Here, as in those counties, the grits are very little used, the 



