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‘¢«'The first and oldest consists of the well-known granite range 
which extends ina south-western direction from Dublin Bay, through 
the counties of Dublin, Wicklow, and Wexford, to Brandon Hill 
in the county of Kilkenny. 
‘** The second presents a more mixed and complicated charac- 
ter, and appears at the surface in the form of numerous elongated 
detached hills, which also affect a north-eastern and south-western 
direction, but do-not for any great length preserve one direct line; 
and as in some cases they present at the surface numerous mine- 
ralogically distinct rocks, as granite, greenstone, greenstone por- 
phyry, compact feldspar, and endless passages of some of these into 
each other, consequent on variations in the proportions of their mi- 
neral constituents,—it is possible and probable they all belong to the 
same period of igneous action, which extended over a considerable 
space, both longitudinally and laterally, in the counties of Wicklow, 
Wexford, and also Waterford. But, confining my observations for 
the present to the hills of granite, I may state that detached hills 
and level tracts composed of that rock occur in three distinct lines 
to the eastward of the principal granite range. 
“¢ «Starting from the north, the most western commences about 
three miles north-east of Rathdrum, in the county of Wicklow, and 
extends in a south-western direction, forming detached ridges of hills, 
and passing the village of Ballinaclash, terminates to the north of 
the village of Aughrim. Preserving the same general direction, we 
next observe granite occurring in Croghan Kinshela Mountain, and 
extending south-westward to Conna Hill, in the county of Wexford, 
which may be considered the termination of the most western se- 
condary granite district. 
**TIn an eastern direction from the foregoing, detached granite 
hills occur to the south of the village of Oulart, in the county of 
Wexford; and in continuation of the same line through about eight 
miles (Irish) to the south-west, we have the remarkable granite hill 
of Camaross, situate nearly midway between the towns of Wexford 
and New Ross, Again, we find granite occupying a considerable 
tract to the northward and westward of Carnsore Point, on the coast 
of the barony of Forth, nearly twenty miles to the eastward of the 
line of Oulart and Camaross. 
