166 Proceedings of the Royal Irish Academy. 



These extensive low-lying bogs contain numerous trunks and roots of 

 large forest trees, such as the oak, fir, &c., as well as the stems, leaves, 

 and fi'uit of the hazel, and other stunted varieties, which prove the 

 existence at one time of large tracts of forest in the country, although 

 it is now quite destitute of timber." 



(p. 27.) — "following the shore line from Belderg Harbour, 

 westward, Horse Island is met with. It is almost completely 

 separated from the mainland by a deep and narrow gorge, due 

 probably to a line of fault or fissure. 



" About one mile and a half further westward (of Benwee Geevraun 

 headland) a most interesting locality occui's, where Glinsk Mountain 

 abuts upon the seaboard near the townland boundary of Glinsk and 

 Laghtmurragha. The cliffs attain a height of about 900 feet, and 

 are broken into steep slopes and precipices ; they are partially 

 accessible from the top by a winding path, or from the bottom by 

 landing fi'om a boat." 



(p. 31 .) — "A more remarkable fault fissure and dyke occurs between 

 the islands of Illanmaster 353 feet high, and the headland adjacent 

 which is 790 feet high. This narrow cleft is cut down to the sea 

 level, with almost perpendicular sides, thi'ough which there formerly 

 was an open water passage, but now a ridge of shingle has 

 accumulated in it. Traces of the dyke are visible at low water. On 

 the opposite side of the small islet, this fissure is further continued 

 east 25° south, as a chasm into the flanks of Glinsk Mountain, the 

 open sides of which attain to a perpendicular height of 300 feet." 



(p. 31.) — " The most remarkable of those fissures and dykes occurs 

 adjacent to the Island of Torduff. A cleft has been formed along a 

 line of fault into the mainland, with perpendicular sides up to 400 feet 

 in height, and scarcely 10 feet apart in some places, but widening out 

 at the top. Seaward it is prolonged in a rather remarkable manner ; 

 first cutting off by an open chasm with vertical walls, one island from 

 its adjacent headland, then another — Torduff — from its headland, 

 which is over 500 feet high, then lUaunakanoge from its headland, 

 Fohernasmeel, almost 550 feet in elevation, and further westward, but 

 with wider interval, the Island of Carrickduff from its adjacent 

 headland. The view lookiag down this cliff with its four pairs of 

 opposing perpendicular headlands on either side is almost unique. 



Memoir Geological Survey of Ireland (Sheet 63 and north half of 

 74), 1880. The district described is one of the wildest and most 

 inaccessible in Ireland, but is not devoid of many features of 



