182 Proceedings oftke Royal Society 
patch of grey granite, occupying nearly the centre of the strath. It 
is very well exhibited near the Roman Catholic chapel, where it 
occurs in situ in large masses, and where it has been worked. It is 
a granite of very good quality, and has been greatly used for build- 
ing ; and it would be much more used if it were more accessible from 
lines of public communication. It extends down the pass of Inver- 
farigaig, where it forms the rock of its upper portion, the lower 
being the Old Red conglomerate. This grey granite is found in 
blocks of different sizes, some of them large, all over the country 
east towards Elgin, intermingled with the conglomerate just men- 
tioned ; but it never occurs in such large masses as the conglomerate, 
which, from its nature and original position, it could not do. It is 
remarkable that this granite is also found in blocks scattered over 
the very top of the ridge of conglomerate between Loch Kecklish and 
Loch Ness , already described, sometimes finely perched on its very 
summits, which range between 1400 and 1500 feet, and I have 
numerous notes of big boulders of it found there. 
V. THE GNEISS OF STRATHERRICK AND THE MONAGHLEA MOUNTAINS. 
Parallel to the line of conglomerate blocks scattered between Loch 
Ness and Lossiemouth, often intermingled with it and the granite of 
Stratherrick, but occurring much more abundantly to the east of it, is 
found a broad band of boulders of grey gneiss. These are of all 
sizes, frequently large enough to have claimed popular notice and to 
have received local names, and are often placed in remarkable and 
elevated positions. The character of the rock may be well seen on 
the side of the road between Inverness and Earr, in the dyke near 
the Free Church of Earr, and in the fine group of boulders in the 
centre of the valley, which forms so striking and interesting a 
geological feature there. They occur in astonishing numbers round 
Loch-na-Glachan , or the Loch of the Stones, into which the stream 
from Loch Duntelchaig flows, near the old parish church of Dun- 
lichity. There they form grand and picturesque groups of all sizes 
and forms, on the east side of the loch and up to the elevated 
summits of the hills, above 1400 feet high, and where they may 
often be seen, right on their crests, standing in a serrated line/ 
against the sky. Altogether, this is one of the most remarkable 
aggregations of blocks that I know, and it has already been referred 
