Kinahan — On Granite and Metamorphic Rocks. 191 



Some of these stones, after a few years' exposure, have already dis- 

 figured what would otherwise be chaste structures ; while in some 

 forty or fifty years, or even less, most of this granite will be more 

 or less decayed. 



In connexion with the Leinster granite range there are in many 

 places, as already mentioned, surface-stones on the granite ground 

 and on the marginal metamorphic rocks. These have been very 

 generally utilized, being easily split and worked ; and, as hereafter 

 more specially mentioned, different places have got a character 

 from these stones, which have not been obtained from any quarry, 

 but solely from erratics of good quality accidentally found therein. 

 Outside of the Co. Dublin the principal quarries are in the Cos. 

 Wicklow and Carlow ; and although Wexford and Kilkenny stones 

 are well known, there does not seem to be any workings that could 

 be called quarries in these counties. 



Quarry near Dundrum. — Recently opened, very fair stones, but 

 requiring to be well selected. 



Goldenball and Kilgobbin. — Small quarries in different places, 

 and surface stones, about eight miles from Dublin ; where they 

 have been extensively used for flagging and quoins, and formerly 

 for dressed work. Good stones can be procured by selection, as 

 shown by the Wellington Testimonial, Phoenix Park. " Grey, 

 usually largely crystalline ; quartz and felspars about equal ; mica 

 olive colour." (Wilkinson.) 



KiUiney and Ballybrack. — Small quarries in various places ; 

 about eight miles from Dublin. " Best stones, light grey, very 

 felspathic : mica black-and-green. The stones are very variable, 

 belonging to the older and later granites, and have to be carefully 

 selected." ( Wilkinson.) 



Kingstown and Dalkcy. — " Very variable in quality and texture; 

 from highly crystalline to fine, and from very hard to friable ; 

 shades of grey ; in the coarse varieties grey and black mica ; in the 

 fine, black mica grey quartz and whitish felspar. In some varieties 

 there are crystals of sphene (Titanite)." (Wilkinson.) Some very 

 fair veins of stone were cut when the railway between Kingstown 

 and Killiney was re-constructed ; used in the Dalkey, Bray Head, 

 and Greystones Coastguard stations. 



Glencullen. — Good bright colour ; free working. " The Glen- 

 oullen granite is a favourite with builders, on account of moderate 



