245 
Geological Relations of the East of Ireland. 
glomerate, exhibiting large rounded and angular pieces of white 
«nd reddish iron-shot quartz, and smaller portions of greenish clay 
slate. At the top of the mountain, the strata, which are from one 
to two feet thick, are gently curved or arched, following the form 
of the summit. Contemporaneous veins, and even masses,, of quartz 
are here frequent in the whiter and granular quartzy sandstone ; 
and thin parallel layers of sandstone conglomerate may be observed 
in the finer sandstone. 
The sandstone of Slievenamuck appears to be arranged in hori- 
zontal strata, some of which yield excellent flags. 
§ 144. The mountainous and hilly tract between the Suire and 
the Blackwater, (see Plate 7. No. 6.) extending from the county of 
Waterford into the counties of Tipperary and Cork, may be gene- 
rally described as a table land of clay slate, partly bordered on the 
flanks by sandstone, and on the higher grounds sustaining isolated 
caps of the same rock, or upholding more widely extended, con- 
tinuous mountain masses. The position of the sandstone borders 
generally follows the inclination presented by the surface of the 
subjacent rock, but the masses on the higher grounds approach 
more and more toward the horizontal arrangement, as they ascend- 
We find this disposition uniform, whether we penetrate through 
these mountains from the northern or the southern side, from Car- 
rick, Clonmell, and Clogheen, or from Kilmacthomas, Dungarvan* 
Lismore, and Fermoy. This tract is surrounded by floetz limestone: 
on the north, the west, and the south. 
A border of sandstone approaches close to the Suire on the 
southern side, from the west of Clonmell to within five or six miles 
of Waterford ; with two exceptions, in which a small patch of 
limestone intervenes, connected with the limestone on the other side 
of the river. One of these occurs on the south of Clonmell,. and 
