O'Eeilly — On the Waste of the Coast of Ireland, 8fc. 143 



are to be attributed. The width of the channel opposite Strangford to 

 the southern end of the village of Portaferry, is a little under 1 800 

 feet, or about i mile, and in part is 15 fathoms deep. The difference 

 in time of high water at the bar and at the northern extremity of the 

 Lough is nearly two hours." 



The author gives an estimate of the quantity of water which 

 passes through this strait in filling and emptying the Lough at each 

 tide 



(p. 13.) — " I may further remark, with regard to Strangford Lough, 

 that we have evidences which would lead us to suppose that it differs 

 very materially in its present state from what it originally was, that 

 its very existence is probably due to its having been a " Geological 

 basin " of limestone, of which traces are still to be found in the 

 narrow stirting thereof at Castle-Espic, but which has all been 

 removed by denudation and ' atmospheric solution,' and that instead 

 of, as at present, being a lough connected with the sea by a strait, it 

 was originally a fresh-water lake. (I^ote. — History does not state 

 as much, but an old tradition seems to exist that such was formerly 

 the case)." 



Memoir Geological Survey of Ireland (Sheets 21, 28, and 29), 

 (1876). The area forms a portion of the great volcanic region of the 

 County Antrim bordering on the eastern coast. 



(p. 21.) — ^'' Flint implements. — Flint-flakes, celts, cores, &Q.., are 

 found over the entire district, not only on that portion where the 

 chalk is subjacent, but also on the high grounds occupied by the 

 basalt. In many places the fragmentary chips are very abundant, 

 such aa on the chalk outcrop in Drain's Bog, as well as along the 

 outcrop south of Glenarm, pointing out the locality where these 

 implements were made. 



Memoir Geological Sui'vey of Ireland (Sheet 14), (1886). The 

 district presents some of the most striking features in the scenery of 

 County Antrim, and no one visiting it can fail to be struck with its 

 fine headlands and deep glens opening out upon the sea-coast. The 

 district included in the northern half of Sheet 14 extends fi'om the 

 River Bush, near Armoy on the west, to the sea-coast on the east at 

 Cushendun, and southward to Eed Bay. 



(p. 9.) — " The coast line is, in general, bold and precipitous. North 

 of Cushendall, south towards Glenariff, it is rather low and un- 

 dulating, and exhibits some fine examples of the old sea caves of the 



R.I. A. PROC, VOL. XXIV., SEC. B.] ^ 



