NATURAL 
teous schistus is first seen; the la- 
minz are much shattered, are very 
thin, havea siight hade to theSSW, 
and range ESE aod WNW. In- 
cluded within the schist, is a vein 
of compact barren quartz, about 
three feet wide, ranging NE and 
SW ; below this is another vein, 
2bour nine inches wide, having the 
same range as the former, and had- 
ing to ‘the northward, consisting 
of quartz, including ferruginous 
earth. Lower down, isa vein of 
a compatt aggregate substance, ap- 
parently compounded of quartz, 
Ochraceous earth, chert, minute 
particles of mica, and some little 
argillite, of unknown breadth, 
ranging E and W, hading fast to 
the southward, and _ including 
strings of quartz, from one or two 
inches thick, the quartz containing 
ferruginous earth.. The yellow ar- 
gillaceous schistus is again seen 
with its former hade and range; and 
then adjacent to the quartz vein, 
is laminated blue argillaceous schis- 
tus, ranging NE and SW, and 
hading SE; which is afterwards 
seen varying its range and hade, 
running ENE and WSW, and 
hading NNW; lower down, the 
blue schist is observed” more com- 
pact, though stili laminated. The 
ground less steep, becomes springy, 
is inclosed, and the ravine, shal- 
lower, has deposited a consider. 
able quansity of clay, sand, and 
gravel. Following the course of 
the ravine, or, as it may now more 
properly be called, the brook, ar- 
Five at the road which Jeads to 
Arkiow; here is a ford, and 
the brook has the Irish name of 
Augbatmavonght (ihe river that 
drowned the old man); hence it 
descends to the Avghrim river, 
just above its confluences with that 
HISTORY. [387 
from Rathdrum, which, after their 
junction, take the general name of 
the Ova, that discharging itselt ins 
to the sea near the town of Arklow, 
forms an harbour for vessels of 
small burden. 
The lands of ire i are to 
the southward, and the lands of 
Ballinagore to the northward of 
the ford, where the blue schistus 
rock, whose joints are nearly verti- 
cal, is seen ranging ENE and 
WSw, including small strings of 
quartz, which contain ferruginous 
earth. Lhe same kind of earth 
isa!so seen in the quartz, contained 
in a vein from ten to twelve inches 
wide, ranging ENE and WSW, 
and hading to the souchward which 
has been iaid open in forming the 
Arklow rocd. 
Here the valley is from twenty 
to thirty yards in width, and is 
covered with substances washed 
down from the mountain, which 
on the sides have accumulated to 
the depth of about twelve feet. A 
thin stratum of vegetable soil lies 
uppermost; then clay, mingled with 
fine sand, composed of smail parti- 
cles of quartz, mica, and schist s 
beneath which the same substances 
are larger, and constitute a bed of 
gravel, that also contains nodules 
of fine grained iron stone, which 
produces 50° per cent. of crude 
iron: incumbent on the rock are 
large tumblers of quartz, a variety 
of argillite and schistus; many 
pieces of the quartz are perfectly 
pure, others atrached to the schis. 
tas, others contain chlorite, py. 
rites, mica, and ferruginous earth ; 
and the arsenicai cubical pyrites 
frequently occur, § imbedded in 
the blue schistus, Jn this mass 
of matter, before the workinzs 
began, the brook had formed 
Cez its 
