164 
Mr. Weaver on the 
however, is concealed by vegetable soil : and the mica slate tract 
continues through Baltinglass, Tinoran Rnd Manger hills, the gene- 
ral range being north-west and south-east, with a dip of 60° toward 
the north-east. 
It appears then, that the whole interval, between Baltinglass hill 
on the west and the western brow of Kilranela hill on the east, is 
occupied by repeated alternations of mica slate and granite, the 
former rock including a great bed of hornblende and greenstone : a 
view of the subject, which is confirmed by the experience of Mr. 
Greene of Kilranela, who in quarrying granite in the south-western 
quarter of Kilranela hill, encountered, to his surprise, mica slate 
beneath that rock. 
§ 50. Mica slate does not occur again within this district till 
we descend considerably to the southward, on the line of the Bar- 
row. It is spread over a small extent on the northern face of 
Brandon, below the summit, and is apparently unconnected with 
the clay slate which occurs lower down : it contains andalusite. 
Mica slate re-appears more to the north, about one mile above 
Graige on the eastern bank of the Barrow, occupying a tongue of 
land that projects to the westward, on the north side of which the 
rock exhibits massy strata ranging north-east and south-west, and 
dipping 65° to 70° south-east. The river in descending from this 
place forms a curve to the south-east, and we perceive in the 
section which its bank presents, that the mica slate is frequently 
interstratified with beds of granite in a conformable position. To 
the eastward of the tongue are higher granite masses, and above 
and below, in both banks, the same rock appears ; and there can 
be little doubt that these alternations rest upon granite, as the fun- 
damental rock. 
