Kinahan — On Granite and Mctamorphic Rocks. 225 



In the hornblende- rock tract at Ardderry Lough, north of 

 Screeb. 



In connexion with the large Dawros exposure of Ophyte, east- 

 ward of Ballynakill Harbour. 



At Curraghwongaun, N.W. of the Kylemore Castle garden, 

 there is a sort of eclogyte, a specimen of which was polished ; it is 

 a handsome clouded and streaked green- and-brown stone. 



In Leamnaheltia, near the south shore of Lough Fee, in the 

 mountain tract northward of Kylemore Lake ; also possibly in 

 connexion with some of the other areas of hornblende rocks in the 

 Co. Gal way. 



Co. Mayo. To the west of the Corvockbrack granite, a little 

 south-west of Loughnahaltora, in the townland of Derrygarve, 

 there is a stone very like the Swedish " green granite," but 

 brighter and handsomer. 



In Glencullen, north-east of Mweelrea, and westward of Doo 

 Lough. 



In two or three places in the neighbourhood of Lugaloughaun, 

 which lies in the hills between Leenaun and Westport. 



Possibly, also, in connexion with the long, wide tract of Croagh 

 Patrick Ophyte, that extends for miles south and eastward of Clew 

 Bay ; and perhaps on Clare Island, in connexion with the exposure 

 of similar rock. Part of the Clare Island exposure is light green 

 nice-looking stone. The more silicious portions of the Croagh 

 Patrick Ophyte take a good and lasting polish, as may be seen in 

 numerous polished fragments on the beach of Clew Bay and of 

 Clare Island. This class of stone, however, would be expensive to 

 work and polish. 



" Stones for the rough rubble used in the backing of the walls 

 of Gal way Docks were procured out of the excavation for the dock. 

 The rock is a very hard greenstone, in part porphyritic [Horn- 

 blende-rock]. It took an enormous quantity of the best special 

 steel to drill holes in it, and of dynamite to split it. The stuff 

 came out in large, irregular lumps, one to two tons weight, 

 without bedding or cleavage. These were used in concrete for 

 backing, while the face-work was of limestone from Menlo where 

 we could have got blocks of almost any size required ; but the 

 blocks used were about five to twelve cubic feet." [James Price.) 

 The hornblende-rocks of the neighbourhood of Gal way town are 



