178 The Irish Naturalist. [July, 



exposed on shore after storms (see Geol. Mag.y Dec, 1895, and 

 I.N., 1895, p. 192). Then Sheep Head, an intrusive dolerite, 

 with its volcanic neck, Carrick-a-Rede, carries the eye 

 eastwards to the long range of basaltic clififs ending at 

 Ballycastle Harbour, and broken only by the Chalk head- 

 lands of Kenbane and Castle Head, which show at this 

 distance merely as two white spots. The little town of 

 Ballycastle itself lies close to the great fault, which brings 

 up to the S.B- the old schists and gneisses about 700 feet, and 

 also the only Carboniferous area in the county, good sections 

 of which show on the shore and in coast cliffs to the east of 

 town. Knocklayd, the mountain (1,695 feet) which rises to 

 the S.E. of town, is composed of the older rocks, with a 

 capping of Chalk and basalt. Fair Head (636 feet), a 

 great sheet of intrusive dolerite, penetrates the Carboniferous 

 rocks about five miles east of Ballycastle ; to the south 

 of it is Murlough Bay, where w^e examined, a day later, 

 the chalk cliff resting on Trias, and slipping down over 

 these soft beds, several hundred feet to the water edge ; and the 

 Carboniferous sandstone with marine pot-holes and the old 

 schists on the shore at Cottage. Tor Head, and Crockan Point, 

 the nearest points of the Irish coast to Great Britain (13 miles 

 from the Mull of Cantyre), consisting of pre-Devonian 

 schists and gneisses, capped at Crockan Point by Cretaceous 

 beds which rest directly on the schists complete the 

 panorama. 



The results of our marine dredgings, off Rathlin, are dealt 

 with by Dr. Chaster in a separate section of this paper ; and, 

 similarly, Mr. Adams gives a list of additional records in 

 I^and and Freshwater MoUusca for the whole district in 

 general, and Rathlin Island in particular. Mr. R. Welch was 

 eminently successful in obtaining some excellent geological 

 and other photographs, amongst them being a series of views 

 of the dried up bed of Lough-a-veema — the " Vanishing 

 Lake " — which, as an illustration of ** Suncracks," and 

 ** Caiion and Plateau" in miniature, are most remarkable, 

 and absolutely unique. 



