166 Mr. Griffith, on the Order of Succession of the Older 
red quartz rock and red clay slate, the quartz rock predo- 
minating; but no beds of true conglomerate have been ob- 
served, though such may be discovered on a more careful ex- 
amination. 
Ascending in the series, and approaching the limestone of 
the valley of Kenmare, the red strata become more schistose 
and chiefly consist of coarse red clay slate, v^^hich, approach- 
ing the limestone, is observed to alternate with yellowish green 
clay slate and red limestone in thin beds. These are suc- 
ceeded by strata of gray quartzose sandstone containing cala- 
mites, the characteristic fossil of the yellow sandstone series, 
the upper beds of which alternate with greenish gray and 
dark gray clay slate, with occasional beds of gray limestone. 
Still ascending, the limestone gradually predominates, till at 
length the slate disappears, and the whole stratification is 
composed of carboniferous limestone. 
To the south of the river Roughty, in a descending order, 
a similar series to that above described appears at the sur- 
face dipping to the north, so that we have again the dark 
gray slate and limestone, the yellow sandstone with calamites, 
the red limestone, the old red sandstone consisting of red 
slate and red quartz rock, and in continuation the whole 
suite of the schistose strata of the transition series already de- 
scribed. 
Having described this section in detail, I again assert, that 
the old red sandstone to the south of Castlemaine Bay has 
been deposited conformably, on the underlying strata, and 
that the apparent unconformability noticed by Mr. Hamil- 
ton as occurring in the Gap of Dunloe, arises from a disloca- 
tion of the strata occasioned by a fault, and not from original 
deposition. 
Owing to the want of fossils throughout the entire succes- 
sion of rocks above described, with the exception of the yel- 
low sandstone and carboniferous limestone of the valley of 
Kenmare, it is difficult to determine the position in geological 
precedence which should be allotted to the green chloritic 
quartz rock which forms the basis of the district under con- 
sideration, or to determine at what precise point the old red 
sandstone should be said to commence. It appears to me 
that the onl}^ key which is likely to unravel this mystery, will 
be found in the peninsula of Dingle, to the north of Castle- 
maine Bay, where fossils have been discovered in the strata, 
which have been recognised by Mr. James Sowerby as be- 
longing to the upper Silurian rocks of Murchison. 
The fossils consist of 
