474 Mr. Weaver on the Structure of the South of Ireland, 
beyond a certain extent ? The key presented by Mr. Griffith 
does not appear to me to answer the purpose, nor can I 
perceive the anomaly which he conceives to arise from the 
southerly dip being persistent*; since among transition 
strata some are presented to us merely as intercalated bands 
with a corresponding dip, while others of a similar character 
are deposited in troughs^ e. g., in Nassau and Belgium con- 
trasted with the Eifel, as noticed in a preceding part of this 
paper. 
The whole subject, so far from being of a mysterious cha- 
racter f? strikes me as sufficiently clear, and which I think 
may be made to appear by merely taking Mr. Griffith’s own 
statements for our guide. Let us, in the first instance, follow 
him from the entrance of Dunloe Gap on the north and as- 
cend to the summit of the Reeks on the south ; and in the 
second, consider the view taken by him of a proposed section 
drawn across Dingle peninsula from Brandon bay on the 
north, to Feilaturrive on the south ; in both cases employing 
his own language, more or less condensed, yet placing the 
series under numbers for the sake of greater distinctness. 
From Dunloe Gap upward, the succession is thus given f: 
1. Reddish-grey quartzose rock; coarse-grained reddish- 
grey conglomerate ; coarse-grained brownish-red slate (quar- 
ried for roofing slate); red quartzose sandstone alternating 
with coarse slate, the sandstone presenting occasionally a con- 
glomeritic character §. 
2. Chloride quartz-rock, alternating occasionally with thin 
beds of green and purple clayslate ; grey quartzose beds, alter- 
nating with thin beds of purplish clayslate. 
3. Reddish-grey quartzose beds, alternating with thin beds 
of purplish clayslate. 
4. Higher up, in ascending to the summits of the Coumeen 
Peest or eastern ridge of the Reeks, the strata become more 
red, and pass into a brick or cherry-red quartz-rock with 
some beds of conglomerate, identical in colour, composition, 
and structure with the red sandstone situated to the north of 
* bond, and Edinb. Phil. Mag. for March 1840, p. 163. 
t Ibid.y p. 166. t Ibid. pp. 163 to 165. 
^ Compare this with the description which I have given of the entrance 
to Dunloe Gap, in my Memoir on the South of Ireland, in ^ 10, in which 
I have shown that these strata vary in their dip between the vertical and 
the horizontal, subject to undulations from north to south, yet with a 
general dip to the south. It is here Mr. Griffith introduces his supposed 
fault, but which, as before stated, I conceive to be merely an apparent de- 
viation in the line of strike proceeding from an interrupted curvature of 
the strata. 
