682 Proceedings of the Royal Society 
at a somewhat lower level. These appeared to run continuously for 
about a mile. On the opposite side, the hill hearing about east 
showed a short line at the same level. Looking towards “ English 
Hill ” on the N.E. no terraces were discernible ; the snow, owing to 
the direction of the wind (which was west), was so thick on the slope 
of the hill facing the knoll, that inequalities, if any existed, were 
undisc overahle. But one of the keepers pointed in the direction of 
the part of the hill for the terraces he. had before spoken of. The 
part so pointed out seemed to he about 2 miles distant, and at an 
elevation of about 100 feet above the knoll on which the party were 
then standing. 
The Ordnance Surveyors had marked on the Convener’s map two 
lines of terrace, one at 1280 and the other at 1140, as existing on a 
hill on the left side of the Doe water. Though, from the circum- 
tances above stated, it was impossible to make out these terraces, 
there was enough discovered to show a line at the lowest of these 
levels on the other hills adjoining — and the existence of detritus 
quite capable of being formed into a terrace at a much higher level. 
One of the keepers stated that on a hill towards the N.W. there 
were beds of gravel and sand to the very top, and without any 
covering of turf. He pointed in the direction of Ben Doe, which 
has an elevation of 2000 feet above the sea. 
The Convener having on his way up Glen Doe observed several 
large boulders on the slope of a hill above him on the left hand, 
resolved to visit them on his way hack. So, accompanied by one 
of the keepers, he ascended the hill, and in looking across the valley, 
he discovered four horizontal terraces on the opposite hill, and con- 
tinuous for about half a mile. They were apparently on detritus, 
for at one spot, where a rock projected, there was an interruption. 
The uppermost terrace the aneroid showed to he about 985 feet 
above the sea, the lowest about 895. 
The first of the boulders visited was 919 feet above the sea. Its 
dimensions, roughly measured, were 14 J x 11 J x 7 feet. It was 
a coarse reddish granite, and very angular. It could not have been 
rolled or pushed. It seemed to have been carried from its parent 
rock, wherever that was, without undergoing any change of form. 
It was resting on gravel and sand. 
The next boulder reached was at a height of 1204 feet above the 
