444 Scientific Proceedings, Royal Dublin Society. 



WlCKLOW. 



This is the only county in Ireland in which Carboniferous rocks 

 have not been found ; nor is it likely that any outlying patches 

 occur under the superficial accumulations. It was also generally 

 believed that no limestone of any kind exists ; but of late years 

 this has been proved to be incorrect. 



In the Glenart demesne, near Arklow, to the westward of the 

 Castle, there is a very impure thin bed of limestone. Westward of 

 Castlemacadam, near the church, in the brow of the hill, there are 

 beds of flaggy limestone, which seem to have been worked to a small 

 extent in former times ; and to the north-east this limestone again 

 appears in the brow of the hill, west of the Ovoca railway station. 

 A bed of limestone was cut in the Avonmore valley when driving 

 up the level from the old Grlebe to Connery mine ; while limestone 

 also occurs near Westaston, some few miles eastward of Rathdrum. 

 None of these limestones have, at least in late years, been quarried ; 

 but they appear to be of a quality very similar to the Courtown 

 limestone, Co. Wexford. 



