552 Scientific Proceedings, Royal Dublin Society. 



Brumkeelan. Three miles from Mount Charles Pier. — Creamy, 

 to nearly white ; felspathie ; slightly micaceous, with slightly cal- 

 careous cement. Dresses and cuts well ; hardens on exposure. 

 Good strong flags can he obtained here ; used in the town of 

 Donegal. Three thousand tons of this stone have lately been 

 shipped by the Messrs. Beckett, to build the Museum and Library 

 for the Science and Art Department, Leinster House, Dublin. 



Beauwin. — Used in Killybegs Coast-Gruard Station for boat- 

 house and slip. " Coarse and uneven in grain, with large quartz 

 pebbles. There are some beds of a fine texture and a beautiful 

 tint in this place, but there is no regular quarry, the stones being 

 raised off the surface, and where they can be had with least trou- 

 ble" (J. Cockburn). 



Kildoney. Four miles from Ballyshannon. — White, micaceous, 

 silicious grains, with argillaceous silicious cement. This stone 

 dresses and cuts fairly well, and is very durable ; used for wall- 

 facing. It is near the sea, and therefore easy of transport, but is 

 not thought as much of as the stones from the Dog's Mountain. 



[In this neighbourhood, in the cliff overhanging the sea, is an anthracite, about 

 7 inches thick. In boring in search of this coal, a sort of emery was struck, 12 feet 

 from the surface.] 



Bocj& Mountain. Fifteen miles from Ballyshannon. — Light 

 yellow, ferruginous, fine-grained, slightly micaceous ; works freely 

 and well. Excellent flagging (was used at the Parish Church,. 

 Ballyshannon) can be obtained here. 



To the south of Bundoran, in the ridge of Calp sandstone, 

 partly in this, and partly in the adjoining counties, is excellent 

 freestone, which was largely used in the buildings in the town. 



Sand and Gravel. — Near the top of the north face of Muckish 

 occurs a very superior silicious sand for glass-making. A little of 

 this at the beginning of the century was shipped to Belfast and 

 Scotland. The place, however, is very inaccessible, and the cost 

 of getting was so great, that it was undersold in the markets by 

 foreign sand. 



[£2 a-ton is what it was then sold at. It is coarser-grained than the Belgian sand,, 

 but of a better quality. The best Belgian sand at the present time can be delivered in. 

 Dublin for 15s. a-ton.] 



The Muckish sand occurs as a disintegrated bed in quartzyte., 



