O'Reilly — On the Waste of the Coad of Ireland, ^x. 137 



" (3) In Arklow Bay, both to the north and south of the Ovoca 



Eiver. 

 " (4) In the bay south of Arklow Head (see fig. 3) ; and 

 " (5 and 6) In the bays north and south of Kilmichael Point. 



"The old sea margin is in these cases generally very clearly defined 

 by banks from 10 to 30 feet high, formed either of marl or slaty 

 strata, from the base of which the low terrace stretches seaward as 

 far as the abrupt descent which forms the margin of the existing sea- 

 shore. The old sea-bed is now covered either by sand-dunes, or, 

 where these are absent, is green with coarse grass and other land 

 plants." 



Dublin Coast. — Memoir Geological Survey of Ireland, Sheets 91 

 and 92 (1871), by Edward Hull, m.a., p.r.s., f.g.s., and E. J. Cruise, 



M.E.I.A. 



(p. 42.) — '■'•Raised Beaches. — A raised beach is seen in detached 

 places along the shore from Balbriggan to Lowther Lodge. North 

 of the lodge it stands from 5 to 8 feet above high-water mark ; and 

 shells which had in most cases lost their colour, and were generally in 

 a fragmentary state, were found therein. (List of same by Mr.Baily). 



Bullin Coast. — Memoir Geological Survey of Ireland, Sheets 102 

 and 112 (1861). 



(p. 50.) — '■'•Drift (Lambay Island). — This deposit exists merely on 

 the low ground which extends along the western margin of the island, 

 and in no respects difiters from the ordinary brown drift gravel clay, 

 containing boulders and rounded lumps of the Carboniferous limestone 

 which is so common over Ireland. Here, however, as we would 

 naturally expect, this clay contains a large percentage of rounded 

 fragments of the local porphyries, but nothing to stamp it as a local 

 deposit. It is, however, evident that, at the period of its depositiou, 

 Lambay Island formed a part of the mainland. This clay does not 

 extend more than 100 feet, if so much, up the flanks of the more 

 elevated portion of the island, and beneath it the rock surfaces are 

 rounded, smoothed, and scratched, the directions of the strise being 

 north-west and south-east." 



(p. 66.)—*' The Drift.— T\vQ drift over the whole of this county 

 consists of two deposits. The first a black or brown gravelly 

 calcareous clay, containing a large amount of rolled limestone 

 fragments of various sizes as the lowest deposit ; and the second, 

 loose sand and gravel, consisting ' principally of limestone pebbles, 



