Kinahan — On Granite and Met amorphic Rocks. 205 



graduating through schists into unaltered Cambrian. In the 

 metamorphosed Cambrians are various metamorphosed volcanic 

 rocks, with their associated tuffs and agglomerates. The latter 

 are of very little value, as they rise in unsightly blocks, not 

 well suited for sea-walls. 



At Carnsore there is a vein of very superior bright red granite. 

 It is regularly jointed, and capable of being raised in naturally 

 square blocks of large scantlings, suitable for long and heavy 

 bearings. It plugs and dresses well, and takes a good polish, 

 as was exemplified in the specimens exhibited in the Dublin Exhi- 

 bition of 1853. The vein ought to be cheaply and easily worked, 

 while the stones could be shipped from Ballygeary. A short time 

 since a company was formed to work this stone; but it was not 

 allowed to proceed, as the agent of the property considered that 

 the unavoidable accompaniments of the working of a quarry would 

 be detrimental to the property. In the same neighbourhood there 

 is a handsome, light-coloured, porphyritic granite. 



In the neighbouring Saltee Islands there are grey and light 

 salmon-coloured granites, which might be made use of with advan- 

 tage, if there were facilities for working them in the neighbourhood 

 of Carnsore. 



In the same district, and near Greenore, there are green granites 

 (Hornblende rock). 



Granite Intrudes at Glenbrien, Ballynamuddagh, 8fc. — These 

 occur in the county S. E. of Enniscorthy. On the old geological map 

 of this district a considerable area of granite is here shown ; but 

 after careful examination it appears more probable that this really 

 consists only of four or five small intrudes, with accompanying 

 veins or dykes in the associated rocks, especially to the east- 

 ward. 



Near Ballaghkeen there is elvan, graduating into granite ; the 

 latter in part growan. Near Ballymote and Corbally Bridge 

 there is granite and elvan, the latter nearly white. Granite and 

 elvan have also been quarried at Ballynamuddagh and Glenbrien. 

 At the former the rock is fine and even-grained ; irregular veins 

 and other intrudes extend from it into the associated iron-masked 

 schist, which is locally called " spawl stone." These rocks can be 

 traced westward, apparently joining the localities at and near 

 Vinegar Hill, and other places in the Enniscorthy neighbourhood, 



