236 Dr. Daubeny on the Geology of Sicily. 
out in relief, but having been unable to detach any of them, 
it is impossible for me at present to attempt enumerating their 
species. 
I do not know whether any stratification’can be discov- 
ered in the rock of Cefalu; there is indeed a kind of separa- 
tion into three distinct masses, but these fook rather like the 
result of cleavage, which may take place in every rock, even 
down to granite, than the effect of a deposition at distinct 
periods. 
Indeed, the rock itself seems to split irregularly, in a direc- 
tien just opposite to that of the nearly horizontal seams above 
noticed. 
The whole of this calcareous formation‘rests upon the 
sandstone just described, and may be referred to the chain of 
hills, which, under the name of the Madonia Range,* are 
seen in the back ground, running nearly parallel to the north 
coast, between Cefalu and Termini, and from thence extend- 
ing to Palermo, and perhaps to Trepani. 
i should seem, however, that this is the only spot within 
the limits of this formation, in which organic remains have 
been discovered. I myself, examined attentively the com- 
pact limestone of Termini and Palermo, without finding any, 
and all the localities to which Professor Scena, in his Topo- 
graphy of Palermo,t refers, in proof of their occurrence, 
seem to belong, not to the compact limestone, but to the re- 
cent breccia, which I shall afterwards describe as overlying 
it. This circumstance makes me adopt, with some degree of 
hesitation, the idea of the identity of the Cefalu with the Pa- 
lermo limestone. 
Let us now consider the characters of this limestone, as 
seen at Palermo and Termini. 
It is generally of a bluish colour, and is then often found 
to emit, when struck, a fetid odour like sulphur ; sometimes, 
however, it is white, and of a compactness not much exceed- 
ing that of the hardest kind of chalk, or of the beds which 
are occasionally met with in the Jura limestone. 
* The Madonia Mountains were the Nebrodes of the ancients; the 
highest of them, according to Ferrara, attain the elevation of 610 toises, 
or 3660 feet. 
¥ Vide “ Topografia di Palermo, abbozzota, da Dominico Scena Pxa- 
fessore di Fisica nel "Universita di Palermo, 1818.” 
