80 
PEOCEEDINGS OF SOCIETIES. 
Benaunmore, county of Kerry. 
This rock is columnar trap—Quartz, . . . . 
,, „ Orthoclase felspar, . 
Per cent. 
2051 
77-85 
98-36 
Professor Haughton mentions, in connexion with these rocks, a fact 
of great interest to the student of Irish antiquities and ethnology. On 
examining, with Mr. Wilde, the collection of stone implements in the 
Museum of the Royal Irish Academy, these siliceo-felspathic rocks appear 
to have been carefully sought out by the makers, and there are very 
few specimens in that large collection which cannot be identified as 
made of Irish rock. There are, however, some stone implements from 
Jamaica, formed of the same kind of stone, which, for its hardness and 
toughness, would appear to be peculiarly adapted for such purposes. 
Mr. Du Hoyer read a paper on the Junction of the Slate and Granite 
at Killiney. * 
Dr. Clarke, a paper on the Alterations of Local Level near Waterford. 
Mr. Baily, a detailed account of the Dossils collected by the Geologi¬ 
cal Survey in the Carboniferous Rocks of the county of Limerick. 
Mr. Wynne, on the Structure of the Galtees. 
Mr. G. H. Kinahan, on the Trap of Yalentia Island ; and Dr. Kinahan, 
on the Zoological Relations of Bray Head and Howth. These were all 
interesting papers, particularly the latter. 
There has been, as all geologists are aware, considerable discussion 
as to the subdivision of the Carboniferous System of Ireland. Until 
lately, Dr. Griffith’s classification of these rocks was undisputed; but 
Mr. John Kelly has lately given great attention to the subject, and I am 
sure that you will not consider your time wasted in considering the ar¬ 
guments on both sides of this important question. 
Mr. John Kelly, in a paper read before this Society, considers that 
the— 
1. Old Red Sandstone, 
2. Carboniferous System (Carboniferous Slate, &c.), 
3. Limestone, 
4. Coal series, 
are all subdivisions of one great formation, in the ascending order, in 
which the whole series from the beginning to the end was deposited, 
without any great catastrophe in the succession. They are all parallel 
one to the other; they rest unconformably on the inferior or underlying 
rock, and are covered unconformably by the overlying rock; the fossil 
evidence also confirms this view, as the lowest member of this formation, 
the Old Red Sandstone, contains organic remains common in the mountain 
limestone. 
In this formation there is not included a deposit, called by Mr. Kelly, 
Brownstone, and which has been associated with the Old Red Sandstone 
