Devon and Corn^wall, Belgium, the Eifel, 8^c. 279 



encies into which it has led him ; and on the faith of which 

 he ventures to state * that, " had Mr. Weaver, who re- 

 presented the conglomerate of Monavoullagh as a mountain 

 cap resthig on greywacke slate, made a careful section of the 

 strata, either from Monavoullagh or Ballyvoil Head, he 

 would have been convinced of his error, and probably have 

 arrived at the same conclusion as mine;" a singular conclu- 

 sion certainly, inasmuch as there is no apparent connexion 

 whatever between the horizontal sandstone conglomerate of 

 the Monavoullagh range and those beds of conglomerate, 

 sandstone, and red slate of the coast which extend eastward 

 from the vale of Dungarvan in several separate discontinuous 

 bands interstratified with other transition rocks ; all these dip- 

 ping throughout at a high angle, chiefly to the south, but also 

 to the north, which latter position may be seen in the red 

 sandstone conglomerate and the associated rocks in Tranamoe 



o 



head, within a short distance of Bonmahon river. I have 

 described elsewhere that these rocks of the coast are connected 

 on the north and west with varieties of clayslate (black, blue, 

 green, yellow, red, and purple), alternating with greywacke, 

 quartz rock, hornstone, red sandstone, and conglomerate, and 

 comprising also subordinate beds of greenstone with porphy- 

 ritic varieties of the rocks which I have enumeratedf. This 

 statement was not lightly given, having carefully examined 

 the interior in many directions, as well as the whole line of 

 coast extending from Dungarvan harbour on the west to 

 Waterford harbour on the east ; and having in the course of 

 my researches (in ISSi) discovered transition fossils in the 

 series, I had the greater pleasure in exploring the district, 

 and in ascertaining with exactness the composition and struc- 

 ture of the rocks, as I had just completed and published my 

 account of the Tortworth transition district in Gloucester- 

 shirej. 



But it is not necessary to rely on my own testimony alone. 

 The interesting remarks of Mr. Holdsworth§ on the eastern 

 part of the county of Waterford, extending from the Bon- 

 mahon coast to the Monavoullagh range on the west, illus- 

 trated by a map, come in aid of my views; and they may be 

 considered the more valuable as proceeding from an unbiassed 

 observer. And had Mr. Griffith fully attended to them, 



* Journal of Geol. Soc. of Dublin, vol. ii. p. 86. 



I Geol. Trans., vol. v,, second series — Memoirs on the south of Ireland, 

 §§ 15 to 20 inclusive. 

 + Geol. Trans., vol. i., second series, 1824. 

 § Journal of Geol. Soc. of Dublin, vol. i., part 3. 1834, 



