Devon and Cornvoall^ Belgium^ the Eifel^ 47 5 
the (supposed) fault in the Gap of Dunloe, but not so 
coarse-grained*. 
The conglomerate on the top of the Reeks is perfectly 
conformable with the underlying strata, and, in fact, a regular 
gradation may be traced from the lower or chloride portion 
of the series through the reddish-grey into the brick-red 
quartz-rock and conglomerate. 
Proceeding now to the Dingle peninsula, the succession 
given also from north to south, namely, from Brandon bay 
to Feilaturrive, is as follows 
1. Dark blackish-gray clayslate, the upper beds of which 
alternate with reddish-purple slate, some of which contain 
Silurian fossils. 
2. Red slaty conglomerates, alternating with red and green 
slate and brown quartz-rock. 
3. Chloritic quartz-rocks, with alternating purplish and 
reddish-grey clayslate, similar in composition and character 
to those of the Gap of Dunloe, and of that district generally. 
Now, on the preceding I have to observe, that, as the pre- 
vailing dip of the strata is to the south, these rocks of the 
Dingle peninsula may be considered as lying deeper in the 
series than those which range in a more southerly parallel, 
namely, as extending from Dingle bay to the lakes of Killar- 
ney ; yet the whole, on both sides of the bay, may assuredly 
be considered, in reference to their general composition, struc- 
ture, and characters, as closely related to each other, and as 
forming one sequence ; and taken in this point of view, there 
appears no difficulty in assigning the red conglomerate, red 
sandstone, and red slate at the entrance to and in Dunloe 
Gap to their proper position in the series. Mr. Griffith 
admits that in the higher parts of the Reeks (No. 4, as given 
above) the same red conglomerate is found as occurs below 
in the Gap of Dunloe (No. 1), the latter being succeeded by 
the chloritic quartz-rock (No. 2), which alternates with thin 
beds of green and purple clayslate. Again in the Dingle 
peninsula we find also red slaty conglomerates (No. 2 of that 
series), succeeded by chloritic quartz-rocks (No. 3), which 
alternate with purplish and reddish clayslate. Surely the 
analogy here is very close, bespeaking alternations of similar 
rocks HI a line from north to south. In the Dingle peninsula 
the red conglomerates (No. 2) repose upon the blackish-grey 
clayslate (No. 1 ), with beds of reddish-purple slate, and some 
* Lond. andEdinb. Phil. Mag. for March 1840, p. 165. But the con- 
glomerate visible in the western ranges of the Reeks, in Lisbug mountain, 
is fully as coarse-grained as that of the Gap of Dunloe. 
t /6id,p. 167. 
