218 Neientifie Proceedings, Royal Dublin Society. 
eastward it is continuous for 112 fms. (until we nearly reach the 
Butts shaft), where it again branches; the north branch being 
only 32 fms. long, and being cut out by the hard country rock ; 
while the south branch continues eastward to the “N, 32° E. 
head,” and along the latter into Connary. 
Along the N. 32° E. head into Connary the lode averages 3 
fms. wide, while from this head westward to the Magpie shaft it 
averages 10 fms. wide, with a bearing of N. 60° E., and dip of 
60° towards the south. 
At the Magpie shaft the lode continued productive for a depth 
of 75 fms. from the surface (cross section No. 7), below which 
point it is suddenly cut out at the 83-fm. level by the descent of 
the hanging wall, in connexion with a protrusion of felsitic 
eranite, at the foot-wall. Seventy fms. north-eastward, at the Old 
Whim shaft, the lode is 13 fms. wide at the surface (cross section 
No. 8), narrowing te 6 fms. at the 75-fm, level, where it becomes 
unprofitable. At the 23-fm. level the foot-wall makes a sudden 
bend southward, forming a step or “ warp,” and narrowing the 
lode from 10 fms. to 5 fms. in width. The foot-wall of the main 
lode is more or less irregular, forming a considerable number of 
such “ warps,” and at these all the rich bunches of copper ore 
were found ; while in the more perpendicular parts of the lode 
the copper ore veins were generally very thin and poor. At the 
Butt’s shaft (cross section No. 9) the lode is 15 fms. wide at sur- 
face, which width it carries down to the 23-fm. level, where the 
foot-wall makes a warp, narrowing the lode to 6fms. At this 
shaft the lode was found to be profitable for a depth of 65 fms. 
from surface. 
The gossan of this lode is principally lmonite with a little 
ochre ; it occurs in bunches in ferruginous clay; these bunches of 
gossan are generally about 5 fms. in length, 1°5 fms. wide, and 6 
fms. in depth ; sometimes they are connected by a string of 
ochre; but in those places where they are almost in contact a 
small vein of limonite invariably connects them. This gossan 
contains some auriferous silver, which is said to have been ex- 
tracted by the old men. Under the gossan there is in general 
1:5 fms. of “ gossan ore,’ principally melaconite and fahlerz with 
a little argentiferous galena. This “gossan ore” rests upon “soft 
ground ” (blue steatitic clay) containing interlaminated strings 
