200 
Mr. Weaver on the 
§ 93. At the head of Glenasane, (§ 29.) a little above the junction 
of the granite and mica slate, and at the foot of the waterfall, a vein 
appears, being bared for a short distance by the torrent, but surround- 
ed on every side by loose blocks of granite. It consists of quartz 
with some granite intermixed, six feet wide, accompanied on its 
western side by a leader of blende from three to six inches wide, 
containing disseminated copper pyrites, but some lumps of galena 
occur in a string of quartz which diverges from the vein. This 
vein ranges 18° south of east and north of west, and dips 60° to- 
ward the south. The rock here is granite, and the vein in its 
direction points to a hollow in the high granite precipice of Coma- 
derry, which faces Glenasane on this side, and were it continuous 
for a mile, it would come in contact with Luganure vein to the 
westward. 
§ 94. I have opened a mine in Luganure vein, on the northern side 
of Comaderry, (§ 29.) by a level driven to the southward, on the vein, 
for a distance of near two hundred fathoms; and it has been proved 
by adequate trials, that this vein completely intersects Comaderry 
mountain, through which it ranges, first up the northern declivity in 
the direction of 30° east of north and west of south, then over the 
ridge 17° east of north and west of south, and lastly down the 
southern declivity in a line parallel to its former range. It is here 
intercepted by the powerful Glendalough vein, hereafter men- 
tioned. 
Luganure vein runs wholly in granite, passing about twelve 
fathoms below the summit of Comaderry, on the eastern side. Its 
ascertained course exceeds nine hundred fathoms, and its depth one 
hundred and eighty fathoms. The adit level driven in on the north 
side would attain a depth of ninety fathoms from the surface, and 
the vein re-appears at nearly the same level on the south side, while 
