of Eclinhiirgh, Session 1882-83. 
209 
consist chiefly of hard crystalline rocks — granite of the grey variety 
is the most common, hut there is also red granite and syenite. One 
specimen of flint was found, much rounded and smooth, as if water 
worn. The specimen having been sent to the Convener, he for- 
warded it to Professor Heddle for his opinion. He returned it, 
stating that it is a “ chalcedonic silica,” not in the least resembling 
what occurs in “ the Liassic beds of our west coasts,” and he sug- 
gests that it had probably somehow been transported from Ireland, 
The Convener asked whether this flint specimen may not have 
been brought by a boat or ship ? Mr Murray replied that this was 
impossible, on account of the position where it was found. 
Mr Murray gives a list of the various kinds of pebbles and blocks 
found by him in the raised shingle beach on this part of the coast, 
and he has sent chips of these with his notes. 
In this list the following are mentioned : — 
“ Red granite, with large flakes of red felspar. 
“Claystone porphyry, with imbedded crystals of a chocolate 
colour. 
“ White micaceous indurated sandstone. 
Crystalline slate. 
Indurated sandstone j irony stained, 
Chocolate-coloured clay stone, 
“ Syenite. 
“ Quartzite. 
“ Claystone porphyry amygdaloidal ; chocolate coloured ; large 
imbedded crystals,”* 
A little way to the north of Dungallon, the raised shingle beach 
s extensive. There are three terraces rising from the sea-level, 
each about 7 feet in height. The uppermost and the one next to it, 
each forms a horizontal flat, about 10 feet wide. The level of the 
highest part of the beach is about 80 feet above high-water mark. 
The shingle extends as far north as the village of Kilchattan, 
Traces of an old beach at the height of about 60 or 90 feet above 
sea-level are visible there. 
* Note hy Convener . — Can this be a pebble derived from the rocks in Killoran 
Bay, described by Professor Geikie as “a remarkable volcanic agglomerate — 
made up of the broken angular debris of the strata by which it is surrounded ? ” 
(Page 160 .) 
