282 Mr. Weaver 07 i the Striictwe of the South of Ireland, 
fines, whose dip varies from south to north, how could we 
expect any conformity between them ? 
If we now pass to the westward of the Monavoullagh sand- 
stone conglomerate range by ascending from the vale of the 
Blackwater, from Lismore for example, to the table-land on 
the north, on which are planted the Knockmildown masses of 
the old red sandstone formation, we traverse in our course the 
older stratified rocks, still possessing the eastern and western 
strike, and for the greater part the southerly dip, and in which 
occur numerous slate quarries. The Monavoullagh sand- 
stone conglomerate range extends nearer to the declivity lead- 
ing down to the vale of Dungarvan than the Knockmildown 
sandstone conglomerate range does towards the Blackwater 
valley, from which it recedes considerably to the north, and no- 
where does that formation approach and reach the vale until 
we enter upon the region of the Kilworth mountain and the ad- 
jacent hills, where it descends toward that valley and supports 
the carboniferous limestone ; while in the defiles and ravines 
by which that mountain is furrowed, and whose course is 
toward the Blackwater, the clayslate formation is exposed to 
view in strata nearly vertical, supporting the old red sand- 
stone formation in unconformed position*. But Mr. Griffith 
represents the conglomerate of the Monavoullagh as under- 
lying these older stratified rocks, although they lie mainly to 
the west rather than to the south of the Monavoullagh range ; 
so that, according to his view, the whole of the schistose country 
lying to the west of the Monavoullagh range, and extending to 
Kilworth, together with the superimposed ranges of sandstone 
and conglomerate of that region, are swamped in one general 
formation, coloured purple, which colour is made to extend as 
far south as to a line drawn from near Ringabella inlet, adja- 
cent to the southern entrance of Cork harbour, to the head of 
Bantry bay, and thence to the western coast opposite to Dur- 
sey island, the said colour denoting a newer transition series, 
while the included bands of limestone are considered as be- 
* Memoir on the South of Ireland, in Geol. Trans., vol. v., second se- 
ries, $ 47 , in which I have remarked that the formation, as there exhibited, 
is quite analogous to the old red sandstone of England, presenting the same 
varieties in colour and composition, and consisting of compact and slaty 
beds of firm sandstone, associated with others of a looser texture, with 
sandstone conglomerate, and with beds of indurated clay and slaty clay ; 
the reddish-brown colour predominating in the series. Similar relations 
are also well displayed in the old red sandstone of Kerry Head and the 
Slieve Meesh range, as well as in the ranges of Knockfeernagh, Kilcruaig, 
and Kilmeady, taken in connexion with the chain of the Seefin, Slieve 
Riagh, Slievenamuck, and Gaultees mountains, §§ 48, 49, 50. The 
parallel might be continued still further north, Ihid. ^ 69, as well as in the 
various quarters indicated in my memoir on the east of Ireland, Geological 
Transactions, vol. v. first series. 
