126 Proceedings of the Royal Society 
ice. (See fig. 13.) The surfaces facing the east present no 
smoothings. 
The examples are numerous on this hill of boulders blocked on 
their S.E. ends or sides. They are cases exactly similar to that 
shown on fig. 12. These boulders are within 200 yards of the open 
ocean, and less than 100 feet above its level. The situation and 
position of these boulders combine to show that they must have 
come from the westward — though in that direction there is only 
the wide Atlantic. 
At the very top of the hill, which consists of well rounded and 
smoothed surfaces of gneiss, numerous boulders lie scattered — most 
of them on that part of the top facing W.IST.W. 
VT. — ISLAND OF SOUTH UIST. 
1. Beginning near the south end, notice has to be taken of a 
well striated gneiss rock, recently exposed by the removal of 
materials for the high road. The spot is on the east bank of Loch 
Dunkellie and at the west side of a hill called Carshavaule, which 
is marked on the Admiralty map as 226 feet high. The striated 
rock is only about 20 feet above the sea-level. 
The rock had been covered by a bed of coarse sand intermixed 
with clay, so that its surface had been protected from the weather. 
The protecting cover contained numerous pebbles, hard and angular, 
the pressure of which on the rock, if they passed over it, would 
probably cause striae. 
The rock consists of strata which dip W.S.W. at an angle of 
about 10°. They were thus conveniently situated for being struck 
and pressed on by any striating agent from the west. 
The lengths of the blocks rounded and striated were respectively, 
4, 7, and 5 feet. 
The striae run in a direction N.W. by N. and slope up towards 
5. E. by S. 
If these striae were caused by rough stones carried in a strong 
current flowing from the N.W., or pushed by floating ice, the striae 
would slope upward in the above direction, because the current 
would in this low lying spot have to rise, to pass through a valley 
situated close at hand, immediately to the south of Carshavaule hill. 
Mr J. E. Campbell in his paper (before referred to) states that in 
