O'Reilly — On the Waste of the Const of Ireland, Sfc, 147 



a, short distance seaward, at the point where the county boundary 

 terminates a little soutli of Portrush. It is partly covered at hi-'h 

 water, during wMcli, in rough weather, masses of it are torn away 

 and carried out to sea. The peat contains hazel nuts, portions of 

 small branches, leaves, and the elytra of beetles. The presence of 

 this peat, within range of the sea-action, may indicate a subsidence of 

 the land within very recent times. Similar instances are to be 

 observed at various points of the Irish coast. 



^'■Raised Beaches, — These occur at Portrush, Port Ballintroe, Eathliu 

 Island, and the Giant's Caiiseway. Professor Hull has recognised 

 the raised beaches of the county Antrim as the representatives of the 

 * 29 feet beach ' of the opposite coast of Scotland." 



(p. 35.) — " The shores of White Park Bay and the coast-line 

 north-west of Ballintoy exhibit examples of the raised beaches and 

 their associated old sea-caves and sea-stacks (see fig. 7). 



' ' Prehistoric remains have been found in abundance on the raised 

 beach platform of "White Park Bay, consisting of worked flints, stone 

 hammers, corn crushers, fire hearths, pottery, etc., and the bones of 

 various animals ; also ' kitchen middens ' of shells and ashes. 



^^ Caverns. — The Chalk at theWhite Eocks is penetrated by numerous 

 caves at different elevations, but none of them extending any great 

 distance. Under Dunluce Castle a cave runs through the entire rock ; 

 this is probably artificial, and could easily have been excavated, owing 

 to the spheroidal natui'e of the rock. At the Giant's Causeway are 

 two caves in the Lower Basalt at the sea-level ; and in Bathlin Island 

 four have been noted by Mr. Andrews, the lengths varying from 

 150 to 250 feet. 



(p. 37.) — " Among the sandhills in the town of Portrush, a gale 

 recently exposed a Prehistoric hearth, in which were pieces of pottery, 

 numerous flakes, and cores of flint, and a few bones. The flakes are 

 remarkable for their fi'eshness ; wherever else found the majority of 

 them are porcelainized or weathered. 



Memoir, Geological Survey of Ireland (Sheets 12 and 6) (1885). 



(p. 5.) — "The district described lies entirely in the county 

 Londonderry, except a small area to the north-west of Lough Poyle, 

 which belongs to the county Donegal. The greater part of this 

 district have been described by General Portlock in his geological 

 report on Londonderry and parts of Tyrone and Fermanagh (1843). 



"Lough Foyle occupies a considerable area in the central and 

 western parts of this district, dividing the portion in the county 



