ON THE GEOLOGY OF THE LAKE DISTRICT OF KILLARNEY. 115 
Tore Mountain, and here we observe the glacial striae running 
straight up its side. 
To the east of Cromagloun Cascade is deposited an enormous 
accumulation of drift, arranged in lunette masses, and filling up 
what was once a bay half a mile wide, on the S. W. flank of Tore 
Mountain; all the debris here observed has been derived from the 
mountains to the west. The current now struck north, wearing 
away the east side of Glena Mountain, along With the limestones of 
Tore Lake. The mass of drift thus produced, as well as that carried 
from the northern faces of the Killarney range, appears to have been 
swept easterly towards Millstreet, forming that extraordinary and 
vast accumulation of drift observed at the mouth of Glenflesk, and 
in that neighbourhood. 
In these latter observations, Mr. Du Noyer wished to guard himself 
against being supposed to maintain the opinion that these drift ac¬ 
cumulations and glacial effects were the result of sudden action, 
since they are quite explicable on the supposition of a comparatively 
tranquil agency, continuing over an indefinite period of time. 
The Society met on the 12th of March, 1856, on which occasion 
the following Paper was read. 
RESEARCHES AMONG THE PALAEOZOIC ROCKS OF IRELAND, WITH A VIEW 
TO DETERMINE THE LIMITS OF THE OLD RED SANDSTONE, AND ITS RE¬ 
LATION TO THE INFERIOR ROCKS. BY JOHN KELLY, ESQ. 
In the present paper, the division of the Palaeozoic rocks to be prin¬ 
cipally treated of, is that called the Old Red Sandstone. This rock 
appears to have been recently mistaken for others, and as we have 
four or five sandstones, it becomes necessary to define clearly which 
of them is the one under consideration,—-as, whatever division of 
the crust of the earth first got the name, should be the one entitled 
to retain it. I shall begin by quoting a few sentences from the 
works of geologists, to show what was understood to be the Old 
Red Sandstone a few years ago. 
Dr. Mac Culloch, in his 11 Treatise on Geology,” published in 1831, 
at page 288, vol. i., says:—“ The lowest bed of the secondary strata 
in England is the Old Red Sandstone, being the first of the second¬ 
ary rocks in the artificial classification; it must not, however, be 
