Devon and Cornwall, Belgium, the Eifel, S^c. 287 



county of Cork. In this section the vertical scale is to the 

 horizontal scale as twelve to one ; which necessarily produces 

 great distortions in the relative position of the mineral masses*. 

 Let us first consider that portion of the section which lies 

 between the valley of the Suire and the vale of Dungarvan, 

 the latter of which extends westward to the Blackwater. 

 With respect to the relative position of the carboniferous 

 limestone of the valley of the Suire as reposing on old red 

 sandstone, both on its northern and southern sides, there is no 

 question. South of the river, the old red sandstone, which 

 there forms a narrow border, reposes unconformably on the 

 clayslate formation, the former dipping north and the latter 

 south. These relations may be observed in many places, 

 and are well exemplified in passing from the river Suire up 

 the defile which leads to the Glenpatrick slate quarries, about 

 three miles to the east of Clonmell, and which unconformable 

 position is admitted by Mr. Griffith himself f- The same 

 relative position is to be observed upon the range eastward 

 also, and to the south of Carrick, through which Mr. Griffith's 

 section passes ; but Mr. Griffith there makes the clayslate 

 of the hill of Carrick, as well as the clayslate extending to- 

 wards the Monavoullagh range, to dip north, though just 

 contrary to the fact, the dip being south ; and by interposing 

 a bed of conglomerate, all north of this, extending to the 

 limestoneof the valley, is called an "old red sandstone series," 

 than which assuredly nothing can be more incorrect. For 

 the details I have given, as well as general views affecting this 

 region, I must refer to the 144th section of my Memoir on the 

 east of Ireland:}:. I have already remarked that the older 

 stratified rocks on which the Monavoullagh range rests, dip 

 generally south, yet are subject to local inflections to the 

 north ; but Mr. Griffith in his section represents the whole 

 of these older rocks as vertical in the centre, from which 

 the strata are made to incline on the southern side to the 

 south, and on the northern side to the north, the latter being, 

 as I have already stated, contrary to the fact. I have also 



same objection, but they are at variance with themselves, the author re- 

 presenting what he terms "old red sandstone" to dip in fig. 1 generally 

 south, and in fig. 2 generally north. They are also at variance with his 

 former sections, given in the Journal above referred to, but especially so 

 with the matters of fact. An unrestrained indulgence of fancy, with a 

 loose application of the terms Cambrian, Siliwian, old 7'ed sandstone, Szc, can 

 tend little to the advancement of Geology. 



* The deceptive effect of such sections has been ably shown by Mr. De 

 la Beche in his Sections and Views illustrative of Geological Phsenomena. 



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



* Geol, Trans.j vol. v., first series, part 1. 1819, 



