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Mr. Weaver on the 
and toward Kilkevin on the north-east. In the northern portion 
of the county, the clay slate ranges north-east and south-west 
dipping south-east. 
§76. Before we leave this county, I may remark that a black 
slightly carbonated clay slate occurs near Enniscorthy, on the estate 
of Mr. Cookman of Bessmount, and the parts adjacent. It was 
there mistaken for coal, and some trials were made in consequence; 
and the same thing happened several years since, near the chapel 
of Sleighruagh in the county of Kilkenny, about two miles from 
Waterford, and also near Rathdrum in the county of Wicklow. 
Thin beds of black clay slate occur also occasionally in the clay 
slate of Cronebane. These rocks generally contain more or less of 
finely disseminated iron pyrites ; and that of Bessmount exhibits 
also thinly interspersed galena. It is well known that substances 
of this description have frequently led to fallacious trials for coal 
in many parts of Europe. 
§ 77. Returning into the county of Wicklow, we may observe 
a small body of quartz rock forming a prominent naked ridge, in- 
cluded in clay slate, on the top of Coolattin hill, but it does not 
there exceed 150 yards in breadth, nor does it visibly extend for 
any great distance : the principal depots of this rock being found 
m the central and northern parts of this county. The range con- 
nected with Cronebane has been already stated to consist of it ; and 
in Carrigmacreilly range, (see Plate 8. No. 7) which is wholly 
composed of this rock, it is found remarkably pure. In its south- 
western direction it reaches almost to the left bank of the Avon- 
more, and in the north-eastern to the Fartrey river, forming in 
this quarter the picturesque rock of Cronroe. This range is flanked 
to the south-east and north-west by the parallel ridges of Kilna- 
manna and the Devil’s glen, composed of clay slate, yet more or 
