234 Dr. Baubeny on the Geology of Sicily. 
eerste? in which quartz sometimes abounds. At Rocca- 
Lumera, and Ali, some miles to the north of the latter place, 
we meet wits a quartzose variety of slate, containing various 
metallic sulphurets, such as galena, sulphuret of antimony, 
together with iron and copper yrites. The decomposition 
of these have probably given rise to the formation of alum, 
for which Rocca-Lumera was once celebrated: but the works 
at present seem quite neglected. The same remark applies 
to the lead mines formerly worked in that neighbourhood. 
ui The slate near its southern termination, alternates with 
The j junction between the limestone and the subjacent ent 
slate, is well seen near the road, at the foot of the hill on 
which the _— of Taormina are situated, This hill, and 
probably most of those contiguous, consist of mn — 
which a far into the interior, constituti of 
ry line between the Volcanic and Repent ‘distiicts, 
a barrier et which ae mires of Etna have never yet 
To this’ ae lannntun seems to belong the series a rocks 
eee I before mentioned, as occurring on the northern coast, 
= Few of the rocks in this district, pre as those near Taormina, 
ary the characters of primitive mica-sla 
¢ Minjivio isa septa of Mons Jovis, , temple i in heiies of Jupiz 
fer having formerly stood there. 
