of Edinburgh , Session 1878-79. 
263 
N. 10° W. At B and D the rock was well smoothed and rounded, 
and very slightly striated. At the east ends, which faced N. 22° E., 
there was no striation and little smoothing. 
I may add, that some of the rocky ridges in East Lothian at the 
places above mentioned, present another feature besides smoothing 
and striation deserving notice, and bearing on this subject. 
These ridges, generally speaking, trend or run in a direction 
E.N.E. and W.S.W. On their 1ST. W. sides, at the base of the ridge, 
there is often a deep trench, running for some hundred yards, and 
now filled with water forming little lakes; as, for example, at 
Smeaton, Balgone, and on the north side of North Berwick Law. 
The probability is, that the agent which smoothed and striated the 
upper parts of these rocks, had scooped out the softer materials 
lying along their base on their north flanks, forming thereby, as it 
were, a gigantic ditch or trench on these sides. 
II. Striated Rocks in adjoining Counties. 
Referring now to striated rocks elsewhere — I would first mention 
the rock at Stirling Castle, near what is called Drummond’s Ceme- 
tery,* at a height of from 220 to 230 feet above the sea. The rock 
EAST 
SOUTH 
WEST 
Fig. 3.— Smoothed and Striated Lock, Stirling Castle, 15x8 Feet, 
there presents a surface which has evidently been smoothed by the 
friction of some agent which has passed over it. The surface of 
the rock dips due west at an angle of from 20° to 30°. There are 
* The observations recorded in this paper were made by me several years ago. 
But I regret to find that by the formation of a new walk in the Cemetery, 
most of the smoothed and striated rock referred to has been removed. A very 
small portion only remains. This I discovered since the paper was read, and 
after the proof sheets had come to me for revisal. Happening then to be in 
Stirling, 1 went to the Cemetery and found what I have now stated. 
