the North-eastern Part of the County of Antrim. 71 



point of Teaverauile, a mountain forming the highest part of the ridge which bounds Ballyeemm 

 Glen on the north, across the head of the glen in which Cushendall is situated ; and along the north- 

 west declivity of Cross-slieve, to the mouth of Glendun river'. From this point it occupies the 

 coast as far as Murlogh Bay. From the base of Tibuliadh near Teavemuile it ranges north-west 

 conforming in its direction to the eastern escarpments of the Aura Mountains, and constituting their 

 inferior regions ; sweeping round the northern front of Bencruachan, which terminates the chain, it 

 turns southwards and composes the lower part of all the mountains as far as Corkey, the whole of 

 the low country which extends from Corkey by Loughguile and Arnioy to Ballycastle, and the 

 half of Knocklayd, in which it rises to the height of 800 feet. From Ballycastle its line of junction 

 with the secondary strata trends eastward up the valley of the Carey, and with the stream of which 

 its boundary nearly coincides, then turns northward until it finally dips under a narrow band of 

 secondary rocks to the south-east of Fairhead, and is thus connected with its north-eastern ter- 

 mination in Murlogh Bay. Over all this area the general dip of the strata is south-east at a hicrh 

 angle ; but there are frequent irregularities in the dip and inclination, and the strata are often 

 much contorted. 



(5.) Other primary rocks occur abundantly, subordinate to the mica slate. 

 Primary hmestone is found at Torr Point, and on the declivities of Knocklayd, 

 and in the townland of Ballynagard, near Ballycastle. Beds of felspar, por- 

 phyry, hornblende rock, and hornblende slate occur in several places. These 

 have all been described by Dr. Berg-er. Granite is found near the village of 

 Ardsillach on the road from Cushendun to Torr. It occurs in the face of a 

 hill called Deaghan, which overhangs the road ; the bed is conformable to the 

 mica slate; it is several yards wide, and is probably connected with a subja- 

 cent body of the same rock. It is composed of red felspar, which is the pre- 

 dominating ingredient, of minute portions of vitreous quartz, and of small cry- 

 stals of brown mica. 



Old Red Sandstone. 

 This rock has little of the conglomerate structure ; being most commonly 

 a coarse-grained whitish sandstone, with a little admixture of argillaceous and 

 calcareous matter. It contains some fragments of other rocks, but in very small 

 proportion to the mass. 



The fragments are water-worn masses of resinous quartz, varying in mag- 

 nitude from the smallest particle to the size of a man's head ; also several va- 

 rieties of porphyry, many of them the same as those of Kilnadore and the 

 Knockans, afterwards to be described ; but many of them have no resem- 

 blance to those porphyries, subordinate to the mica slate, or to any other por- 

 phyry known by me in situ in the North of Ireland. 



Some of the imbedded masses are the same as the base itself, showing either 

 that parts of the rock have been derived from preexisting portions being worn 



' See after Article 7. 



