26 JOURNAL OF THE GEOLOGICAL SOCIETY OF DUBLIN. 
the east shore of Lough Erne. Calcareous slates interstratified 
with limestone beds occur here, in those rocks which lie below 
the main limestone. 
Ardclough, in Kildare, is about eight miles from Dublin. The 
quarries are on the southern bank of the Grand Canal. The 
rock is limestone, of a dark gray colour, beds massive and very 
pure. Large quantities of it are brought to Dublin, and burned 
into lime. It is rich in fossils, among which prevail beautiful 
specimens of Euomphaluspentangulatus and Orthoceras ovale; also 
several varieties of corals, the Fenestellce predominating. 
Ardloughill, in Donegal, is two miles S.E. of Ballyshannon, and 
one mile N.W. of the village of Belleek on the river Erne. The 
fossils here are found in a few small excavations made in the lands, 
to get stones for fence walls. The rock is calcareous slate, in¬ 
terstratified with beds of limestone near its base. Pleurorhyncus 
giganteus is found abundant. 
Ardoginna or Ardoe, in Waterford, lies on the coast, five miles east 
of Youghal, and one mile south of the village of Ardmore. There 
is a fine exhibition here of the strata, passing from sandstone into 
black calcareous slates, alternating with thin beds of limestone 
dipping at a steep angle towards the sea. Fossils are found in 
the thin beds of limestone. 
Armagh, in Armagh County. This town lies on the junction of 
the Gray wacke and Carboniferous formations, and red sandstone 
beds, with reddish limestone alternating, form the lowest part 
visible of the latter. Some beds of the limestone exhibit a re¬ 
markable conglomeritic character, and contain numerous angu¬ 
lar fragments of red sandstone, and also of red limestone. The 
limestone in the quarries about the town, at Farmacaffly or Red 
Barn, and other places, contain many species of the usual fossil 
shells of the limestone, and also some corals, though the latter 
are rare. There is a remarkable similarity between the rocks 
at Armagh, and those at Castle Espie, on the N.W. shore of 
Strangford Lough, and the prevailing fossils also are common to 
the two places. Orthoceras giganteum and Productus giganteus 
are some of these. 
At Armagh the remains of fishes are found in the limestone. 
Palates, teeth, spines, and rays, are common. The quarry men 
have been taught by Captain Jones to appreciate and preserve 
