HO [Proc. B.N.F.C, 



posits. This external coating often penetrates to a depth of an 

 eighth of an inch or more. There are instances where different 

 portions of the same gravels yield flakes of different characters. 

 For example, at Ballygally, on the east coast of Antrim, the flakes 

 near the sea are quite white and worn, while the flakes in the same 

 gravel further from the shore are sharp and of a warm brown colour. 

 It has been carefully ascertained that in the County Antrim, or 

 Down, true flint flakes are not found in the crushed flints that occur 

 so abundantly in the hollow, irregular surface of the Chalk below the 

 Trap rocks, nor are they found in any natural or accidental accumu- 

 lation of flint debris. They do not occur in the undisturbed Ter- 

 tiary or earlier Post- Tertiary deposits, although we have numerous 

 examples of these deposits in Antrim and Down frequently contain- 

 ing abundant fragments of chalk and flint, but in every such case 

 the flint fragments are quite shapeless and could not be mistaken 

 for true flakes. The latter are only found in the surface gravels and 

 generally within a few feet of the surface. They were found in great 

 abundance around Ormeau Bridge, Belfast, on sites now covered by 

 streets. On the County Down side of the Lagan they occur in the 

 brickfields at Ballynafeigh ; also at Annadale, overlooking the 

 Lagan ; and sparingly in the fields on both sides of the river as far 

 as Moira. They occur abundantly in the gravels at both sides of 

 Belfast Harbour, at Carrickfergus, Kilroot, and Whitehead, on the 

 Antrim side, and at Holywood, Bangor, and Ballyholme, on the 

 County Down side. They have also been found in the gravel 

 dredged from Belfast Harbour, off Greencastle, &c, and they may 

 be frequently picked up on the walks gravelled with this material. 

 They are distributed over Islandmagee, and are in enormous quan- 

 tities in the gravels at Glynn and Lame, particularly at the Curran at 

 Lame, where thousands may be gathered from the surface of the 

 raised beach gravels. They are equally abundant at Ballygally, and 

 are numerous at Glenarm and Carnlough. They occur on the bleak 

 hillsides sloping to TorJHead, and along the cliff heads at Ballintoy, 

 and in the sand dunes from the Giant's Causeway to Downhill. 

 All these places are situated on or near the outcrop of the Chalk, 



