Kin AH AN — Tidal Currents and Wiiid-tvarcs. 453 



as marked in the Chart of 1847. Since then an artificial cut was 

 made, near the centre of the bank, but in subsequent years an 

 attempt was made to reclaim the lagoon, and this cut was replaced 

 by a tunnel. The reclamation and tunnel, however, have failed, 

 and now the natural opening is gradually again forming at the western 

 end of the bank.* 



On the S.E. coast between Carnsore and Greenore, the driftage 

 seems to be regularly northward along shore ; but after the latter 

 point is passed there are two lines of driftage, the main driftage 

 direct towards Cahore Point, and a secondary driftage round Greenore 

 Point, and along the shore of Ballygeary Bay to the Dogger bank. 

 There is also at times, in all the bays on this S.E. coast, a drift- 

 age direct on shore, occurring after continuous south gales, and appa- 

 rently due to the water being banked up in the Irish Sea by the wind. 

 That the two first mentioned tidal driftages occur is quite palpable, as 

 portions of the rocks forming the coast at Carnsore and Greenore are 

 found along the shore of Ballygeary Bay as far as the Dogger bank, 

 also in the shingle beach which margins the coast for three miles on 

 the south of Cahore Point, while between the Cahore shingle beach 

 and the Dogger bank they are very rare. Such pieces must come from 

 Greenore, and not from the local drift, as all fragments and blocks in 

 the drift have come from the northward or north-eastward, and not 

 from the southward. If we trace the beach driftage from Greenore 

 we find in various places along the shore a little shingle, which 

 increases in quantity and size as we approach the Dogger bank ; on to 

 which, and from its N.E. end north-eastward to the Blackwater bank, 

 in the deep water, most of it seems to be carried. Some, however, 

 goes through the Hantoon channel, between the Dogger bank and the 

 Rosslare sand ridge, a small portion of which is carried round the 

 north end of that ridge, to be lodged on its west side. In Ballygeary 

 Bay, a pier and viaduct was commenced in 1873. This has now quite 

 changed the features of the coast-line on the east of the pier, as a fore- 

 shore has formed between the old cliff and the sea. This accumula- 

 tion extends from the pier to the Point of Ballygillane, is over 100 

 yards wide, and in places over eight feet deep. 



The efflux from the Wexford lagoon stops the tidal driftage to the 

 northward, and thus forms the Dogger bank ; and formerly, prior to 

 the in-take of a considerable portion of this lagoon, this driftage accu- 

 mulated in a massive, irregular east and west tidal shoal, as repre- 

 sented in the chart made in 1847 by Comm. Eraser, K.. IST. ;f showing 

 that the force of the efflux and of the tidal wave was nearly equal. 



* Since tlie above was written, the occupiers of the adjoining lands have cut the 

 hank near the former artificial embouchure. 



t Admiralty Chart, Sheet xiv., a. d. 1847, which compare with the hank as 

 marked on Sheet xv., a.d. 1873, and enlarged plan Wexford Harbour, a.d. 1847, 

 and Wexford Harbour, a.d. 1873. 



