18 Mr. Weaver on the Geological Relations of the South of Ireland, 



mains. The broken portions of Crinoidea are very frequent in the hmestone. 

 The general range of the conjoining slaty and other rocks on the northern 

 side dip to the souths and on the southern side to the norths commonly at 

 high angles^ to which the limestone appears to conform, its more central 

 strata approaching the vertical position, as may be observed in the Tallow 

 district. 



On the northern side of this limestone band, in the range of hills which ex- 

 tends eastward to the southern part of Dungarvan harbour, may be observed 

 numerous varieties of grey wacke, sandstone, quartz-rock, and slate, frequently 

 of a reddish brown hue, also of a yellowish or whitish cast, the sandstone and 

 grey wacke affording, in some places, tolerable freestone for building purposes. 

 Many coarse conglomerates occur also in the series, containing fragments and 

 pebbles of considerable size, 



(27.) Proceeding S. from Aglish to Clashmore, a distance of about five 

 miles, the slaty rocks undergo interchanges of the dip from N. to S., and again 

 to the N., vertical strata intervening. Between Clashmore and Ballyhenny 

 we cross a band of limestone about half a mile wide, which ranges nearly two 

 miles E. and W., included in clay-slate, these rocks all dipping in conformity 

 75° to the N. The slate is partly interlaminated with the limestone, where it 

 underlies the latter. Lydian-stone occurs occasionally in the limestone, in 

 layers a few inches thick, and also in interspersed portions. The latter rock 

 is mostly dark bluish gre}', containing chiefly small fragments of crinoidal 

 remains and of some few bivalves. At a little distance S.E. of Ballyhenny 

 limestone quarry, roofing-slate is raised. 



(28.) To the N. of the town of Youghall is a band of light-coloured lime- 

 stone, which, proceeding from the vicinity of Clasheen on the W. past Kil- 

 natoara Castle and river, seems to cross the harbour, reappearing on the E. 

 in Pilltown, and extending thence to the small bay of the sea situated to the 

 N. of Ardmore Head. It may average half a mile in width, and both at Pill- 

 town and Kilnatoara Castle quarries the strata dip 80° to 83° to the N., or 

 approach the vertical. The slaty rocks immediately north of this limestone 

 dip south, and on the south to the north, but in both cases at high angles ; 

 while still further north and south the dips are interchangeable, so that the 

 general series may be considered as nearly vertical. In the Pilltown lime- 

 stone are few well-marked organic remains, and they are chiefly crinoidal, as 

 also in that of Kilnatoara. In the latter I did not observe a single bivalve, but 

 I obtained a broken portion of what appears to be a Goniatite of Von Buch. 



(29.) South of Youghall we enter upon the principal band of limestone 

 contained in the transition tract, extending from Youghall Bay on the east. 



