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Proceedings of the Royal Society 
the adjoining surface of the land with vertical walls. The public 
road runs along the coast both north and south from Ettrick Bay, 
so that there is ample opportunity of studying the boulders lying 
on the shore. 
At or very near Kildavannan Point a boulder of pure quartz 
first attracted attention, 6| x 5J x 4 feet, weighing about 10 tons. 
From the way in which it was blocked on its east side, it seemed to 
us probable that the parent rock would be found to the west. 
Accordingly, at a distance of about 100 yards, a very large mass 
of quartz rock was found in situ among the slate rocks. 
The boulder next met with was one of gneiss, 11 J x 7 x 5 feet, 
weighing about 30 tons. Its sharpest end pointed K.N.W. There 
was vertical slate rock under its east end, which seemed to have 
obstructed its progress eastward (see fig. 3, Plate III.). 
There was another gneiss boulder 8x7x6 feet, also on slate rocks, 
and blocked in a similar manner at its east end. 
At one place the slate rocks, which are nearly vertical, and run- 
ning in a direction about S.W. and N.E., presented a vertical wall 
on the beach of several feet in height, facing the north ; a gneiss 
boulder, 12x8x5 feet, weighing about 35 tons, rested against this 
north wall in such a way as to show it had been pushed from the 
north, and had been stopped by the rock. A number of smaller 
gneiss boulders were on the beach close to the north side of the 
slate rocks (see fig. 4, Plate III.). 
Many more examples of the same kind were observed along the 
coast for about 3 miles. The boulders are larger in size towards 
the north. 
On returning back to Ettrick Bay, a visit was paid to the coast, 
on the south side of the bay. It has been already mentioned that in 
Ettrick Bay, on the shore, there are no boulders, but to the south of 
the bay they again occur, most of them gneiss, though there are 
also some of granite. A sea-wall, lately built to protect the high 
road, contained a large number gathered off the shore, and others 
were showing their heads above water at a distance from the shore. 
The same agent which had carried or pushed the boulders along 
the coast north of Ettrick Bay, had continued its S.S.E. course 
across the mouth of the bay, and dropped boulders on the coast 
beyond the bay. The high ridge of rock at Kildavannan Point, 
