139 
of Edinburgh, Session 1878 - 79 . 
a diagram, fig. 30, and on account of a peculiarity that the ruts 
crossed a fissure in the rocky surface. 
The general surface of the smoothed rock at both places dipped 
due west at an angle of 12°, and looked out on the Atlantic Ocean, 
which was only a quarter of a mile distant. The direction of the ruts 
and striae was the same at both places, viz., W.1ST. W., and rising up 
E.S.E. on the surface of the rock at an angle of about 10°. Probably 
owing to the obstruction which a current striking the rocky surface, 
dipping due west, would meet, a W.N.W. direction would be the 
result of a current from the N.W. At both places the ruts were 
wider and deeper at the west ends than at the east ends. One of 
the ruts was carefully measured, and showed at the west end a width 
of 2 inches and a depth of f of an inch ; at the east end a depth of 
1th of an inch ; and there, the width ceased to be distinguishable. 
The peculiarity before referred to was a small fault or fissure 
crossing the rocky surface as shown on the figure by the letters a, b, 
c. The fissure had caused, as it were, an upthrow of the rock, of 
about f of an inch. Where the rut crossed the fissure, there was 
a slight deviation in the line of the rut, as shown in the figure. 
The hard pebble or stone which produced the rut, meeting with the 
obstruction caused by the upthrow, had been slightly diverted from 
its course, but it had eventually passed over the upthrow, breaking 
off the edge of the rock. 
5. Miavig is a small hamlet situated on an arm of the sea, 
branching up from Loch Roag on the west coast of Lewis. About 
half a mile to the N.W. of Miavig a hill called “ Dramamin 
Voltas” (height above sea 270 feet) rises above the general surface 
of the district, and has been the means of arresting a multitude of 
large boulders. They are clustered and piled over one another upon 
the north and west sides of the hill (see fig. 31). A few lie on the 
east side, a little way below, as if they had tumbled or slipped down 
from the top. 
6. On the road from “ Garry-na-hine ” to Loch Carlowrie there 
are several objects of interest. 
The hills are rocky. Their smoothed faces are all, as elsewhere, on 
and towards the west; their rough faces on and towards the east. 
There seems, however, to have been a slight change here in the 
direction of the current • for whilst at Breasdeit village the smoothed 
