698 
Proceedings of the Royal Society 
b. At this place, looking towards the N.W. — viz., in the 
direction of Loch Lomond — an opening between the hills, which 
are apparently about 1000 feet high, was discernible; this opening- 
being about 1J mile wide. 
c. At four other places on Craigend moor, from 500 to 600 
feet above the sea, two to three miles apart, there were striations on 
the rocks, pointing repectively S.E. by S., S.E. J S., S.E. by S., 
and S.S.E. 
At all these places the direction was seen to pass through the 
opening between the hills above referred to, indicating that the 
agent, whatever it was, which produced the striations might have 
come, and probably came, by that opening. 
d. On this same moor (forming an extensive plateau of about 6 
miles long by about 3 miles wide) I had pointed out to me by Mr 
Young several boulders in different places. 
Two were of trap, from the Kilpatrick hills, situated some miles 
to the W.K.W., and at a height of 570 feet above the sea. In cir- 
cumference, each boulder measured 27 feet, and, so far as not 
buried in the drift on which they were lying, the height of one was 
feet, of the other 6- feet. 
Another boulder, well rounded, 500 feet above the sea, was of 
grey granite, weighing about 2 cwt., which Mr Young considered, 
from the size of its felspar crystals, to have come from Ben Awe, 
a mountain situated to the N.W., and distant about 50 miles. 
There were several smaller boulders of old conglomerate — 
transported, no doubt, from the well-known hand of that rock 
which, running from Dumbarton, crosses Loch Lomond in a K.E. 
direction towards Aberfoyle. 
e. In the valley of the Blane there are deep beds of sand 
formed, most probably, whilst the sea occupied the valley, and 
numerous well-rounded boulders of all descriptions. At Strathblane 
Bailway Station there was a deep cutting of a sandbank, with several 
boulders in the sand, and one in such a position as to indicate that 
it had fallen from some raft which had been conveying it, as it was 
sticking with its narrowest point downmost.*- 
/. It was remarked to me by Mr Young, that whilst boulders, 
* See a diagram of this sandbank and boulder in a little book, published 
by Edmonston & Douglas in 1871, called “ Estuary of the Forth.” 
