208 Scientific Proceedings, Royal Dublin Society. 



Between Adamstoivn on the S.W., and the parish of Clone on 

 the N.E., are calcareous tuffs, some of which seem to be rich 

 enough to burn into lime, while all, if ground up, ought to be 

 good fertilizers, especially for boggy land. 



Dunganstown, four miles S. S.W. of New Ross. Grreen, 

 white, speckled granitone ; a very nice-looking stone, like some of 

 those formerly quarried in Egypt. 



Localities of varieties of hornblende rode of good appearance. 



Corcannon, S. W. of Arklow. Very fine-grained; olive green; 

 slightly granitoid. 



Ballybrennan, about three miles S.W. of Enniscorthy. Nice- 

 looking; light green; mottled. A ughnally and Crefoge, southward 

 of Enniscorthy. Pale, greenish-grey and yellowish- greenish; nice- 

 lookiug ; finely mottled. 



Palace, east north-east of New Ross. A handsome green-and- 

 white granitoid rock. 



Ballaghboola, near New Ross. Greenish, white, speckled grani- 

 toid rock. 



North of Clogh. Mottled green, fine-grained, slightly grani- 

 toid. 



Crann Mountain and Ballythomas, N.E. of Wicklow Grap, at 

 the north of the country. Nice-looking, greenish stones ; some 

 mottled in veins. 



Quartz-Rocks and Schists. 



The Quartz-rocks are almost entirely confined to the Cambrians ; 

 although they occur sometimes in the adjoining Ordovicians. In 

 the neighbourhood of Wexford they have a horizontal structure, 

 and can be raised in sizes suitable for walling. They have been 

 extensively used in the buildings in the town, and for road metal ; 

 elsewhere they have been very little quarried. 



The Ordovicians margining the granite in the north-west part 

 of this county, as also a wide belt of the rocks of this formation on 

 the south, and margining the Cambrians, have been altered into 

 schists. The Cambrians, south-east of the trough of Carboniferous 

 limestone that extends from Wexford Harbour, south-westward, to 

 Duncormick, are also altered, sometimes to a very great extent, 

 being changed into gneiss, or even granite, while those to the 



