REVIEWS, 
201 
Journal of the Geological Society of Dublin.- Vol. VI. Part 1. 
1853-1854. Dublin : 1854. With a Plate. 
Our readers need not, for one moment, imagine that, when presenting to 
their notice the “ Journal of the Dublin Geological Society,” we intend 
to act the part of hostile reviewers, or to criticize the proceedings of a 
learned society. No ; far from us be such a course ; but we think it not 
objectionable, at the same time, to take a passing note of their sayings 
and doings; and, perhaps, the wisest course of doing this would be to 
condense the already well-condensed address of their esteemed president, 
J. B. Jukes, F.R.S., delivered before the society on the 8th of January of 
the present year. But our space forbids us to do this fairly; and so we 
must content ourselves with giving a brief notice of the papers, of which 
four are contained in the present part, which has also added to it the re¬ 
port from council, and the above-mentioned address of Mr. Jukes. 
The first in order is one by the Rev. Professor Haughton, On the 
Newer Palaeozoic Rocks, which border the Menai Straits, in Caernarvon¬ 
shire. The newer palaeozoic rocks in Caernarvonshire occur on the east 
side of the Menai Straits, where they form a thin patch, extending N.E. 
for a distance of upwards of 8£ miles ; their greatest breadth, measured 
in the N.W. direction, being less than one mile. They are bounded on 
the south-east by one of those bands of felspar porphyry which constitute 
so remarkable a . feature in the geology of north-western Wales, and on 
the north-west by the Menai Straits. This district contains a complete 
series of deposits, extending from the Upper Devonian sandstones, and 
conglomerates, on the north, to the shales and marl beds of the coal mea¬ 
sure, on the south. Professor Haughton divides his paper into three parts— 
the physical geology of the district; the measurements of thickness of 
strata; Palaeontological observations, with a list of the fossils found. As 
one of the chief objects in examining this district was its comparison with 
our Irish carboniferous series, there is added a list of Irish localities and 
formations, divided according to Dr. Griffith’s system; the list contains the 
names of thirteen zoophytes and seventeen mollusks, one of which—a 
Naticopsis—appears to be an undescribed species. The general conclusion 
which Mr. Haughton draws from the Menai group of rocks and fossils is— 
that in this district there exists no distinction between the Devonian and 
carboniferous deposits; but that the entire series of beds, including the red 
sandstone conglomerates and yellow sandstone at its base, must be con¬ 
sidered as a continuous whole; and corresponds, in its palaeontological 
character, with the lower limestone and yellow sandstone formations of 
Ireland. 
VOL. i. 
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