LOCALITIES OF IRISH CARBONIFEROUS FOSSILS. 
31 
sils of the calcareous slates on the west side of it, about Clonea 
and Dungarvan, are highly distorted; while those on the east side, 
about Hook Head, on the same parallel, and in similar rock, are 
not so, or are at least but very slightly altered. 
Boa Island, in Fermanagh, is an island in the north end of Lough 
Erne. The rocks here are mostly yellow sandstone, black shale, 
and impure limestone, all of which contain fossils. Those of the 
sandstone are only casts, the calcareous portion of the fossil hav¬ 
ing been absorbed or removed. 
Bohevny, in Fermanagh, lies on the west side of Lough Erne; it is 
situated one mile N.W. of the village of Churchhill. The rock 
is mostly black slate with thin beds of limestone, being the lower 
part of the limestone. 
Boston, in Kildare, is six miles north of Kildare, and four miles 
east of Kathangan; fossils are plentiful in the limestone here. 
Brackaghreilly, in Londonderry, is two miles west of Maghera, 
and on the road to Draperstown. The east boundary of the town- 
land here is a stream, and in this, a few perches north of the road, 
a bed of gray rock, about a foot thick, occurs in black shales at the 
level of the water, in which scales and bones of fish are plenti¬ 
ful. 
Brickeen Bridge, in Kerry, is four miles south ofKillarney. The 
calcareous slates about this place yield fossils. 
Bruckless, in Donegal, is eleven miles west of the town of Donegal, 
and one mile north of the village of Dunkineely. The rock here 
is composed of red sandstone, which forms the base of the Carboni¬ 
ferous rocks, succeeded by alternations of yellow sandstone, black 
slate, and thin beds of limestone. The finer beds of the slate 
contain a profusion of the fossils usually found in those beds, 
the best of which are found in a stream which flows west¬ 
ward through the townland, into the sea. 
Bunaninver, in the county of Fermanagh, is three miles south of the 
village of Kesh, on the east shore of Lough Erne. Where the 
shales and thin beds of limestone are exposed to the action of the 
water, the fossils are easily seen. 
Bunatrahir, in the county of Mayo, is eight miles N.W. of Killala, 
and about a mile N.W. of Ballycastle. The rocks along the 
western shore of Bunatrahir Bay are well exposed, being the 
lowest part of the limestone subdivision of the Carboniferous 
