3 ek in the valleys and water c 
found at the base and sides of the chain, and forms secon- 
ae 
: Ges al 
__-merated Bader the rege of argillite, wacke, greenstone, 
gray-wacke, 
F. calls 
+ granite, ( eomnion i in veins in gneiss and mica slate. - 
| a band of T: 
not abundant, fog beanty and friable to be wrought for mar: 
tio) fine grained, pe ee grey, often foliated 5 
‘at mpact, 
bounds? in pete sometimes contains im age: ) 
202 Notices of the Geology and Mineralogy of Sicily. ' 
Pelorus. This granite is very compact; its feldspar is most _ | i 
abundant, and often porphyritie in rhomboids. 11 is abun- | 
dant in large blocks, at the Bere a i mountain, particu- 
neiss covers the granite on he See of the chain. It 
often contains nodules of earthy iron ore. Mica slate is : 
dary ridges extending far towards the centre of the island. 
Feldspar often constitutes large veins in the granite, and 
forms entire blocks in the debris of the mountains. There 
is a coarse eet pp vile easily disintegrating, which Prof. 
dai vite. Itis probably the coarse, friable 
of [ransition Rocks running along the a 
mountains of Bee pig en 
Ther 
vhole 
is the ranting hh 
An rned, Phistise and compact; ing 
gre e; Porphyries of many varieties, with a base o 
ibs Me or feldspar; serpentine and steatite in aterell 
masses at the base of Pelorus; and various aggregated 
rocks. ‘The nomenclature of the author is here rather an- 
tigquated: we would venture to class the rocks here enu- 
thaps the limestone alternating with 
te 1 may ‘be. cee to the shell limestone with in- 
sir ilar relation to the argillite in Duteh- * 
be imestone of Sicily 18 arranged. under the following ee Hj 
divisions : 1. Primitive in the veins of gneiss and mica ae a ee 
ble; dolomite is not uncommon: Transition, ( Calcari 
found in 
ebrodes, | and in the mountains pane Palermo, &e. : 
Becca's very fine g ssainelitinds hard as flin 
lime e;sometimes contains anomias, medus is: & C.: : ; 50 
titut a organic remains ; generally occupying t 
ountains, and covered by a coarser shell limestone : : 
fine grained, often with a confused crystallization, 
& 
