676 Proceedings of the Poyal Society 
there are porphyritic boulders lying on the blue slate rocks, and so 
situated as to make it clear, that they have been brought and lodged 
there by some agency from the N.W, 
Below the old parish church of Kilcheran a small stream joins 
the sea through a valley in a direction W.1ST.W. (magn.). The 
rocks on the south bank of the stream are ground down and 
striated in such a way as to show that some force has passed 
obliquely across the valley from N.W. 
In regard to these Islay boulders, it is very apparent that they 
have all come from the north — some of them very probably from 
Mull. It is also rather remarkable that the largest should occupy 
sites very nearly on the same level, viz., 228 feet above the sea, 
a circumstance suggesting the same means of transport. As bearing 
on this last point, it may be observed, that on various parts of the 
Scotch coasts there are traces of old sea-beaches, at heights between 
250 and 500 feet above the present sea-level. 
13. On the Peninsula situated between the Firth of Clyde (on the . 
east side), and Loch Striven (on the west side), there are several 
boulders of some interest. 
(1.) At Dunoon and Kirn there are boulders of a micaceous 
sandstone rock, all well rounded, lying on the edges of the blue 
slate rocks which form the beach. One has had painted on it 
the .words “ Jim Crow ,” being 15 x 8 x 6 feet; another, the words 
u John Bull,” 15x12x6 feet. 
It was stated to the Convener by a local correspondent, that rock 
of the same nature as in these boulders occurs in the Holy Loch, 
situated about a mile to the north-west. 
Two of the boulders on this part of the beach are so fixed as to 
indicate from what quarter they must have come into their present 
position, viz., from the North. Sketches of these were taken. 
(2.) Along the shore towards Innellan there are numerous boulders 
differing from the rocks on which they lie. Some of these rocks 
show surfaces smoothed and striated, the striae running north-east 
and south-west — a direction parallel with the general line of coast. 
Some local agency has, therefore, probably been at work here. 
(3.) On the east shore of Loch Striven lies the large, well-rounded 
boulder, called “ Craig na Calleachf or u Stone of the Witch ” — the 
legend being that in former times, the witches inhabiting both 
