204 
Proceedings of the Royal Society 
and sliding over the hills, could have left the number of blocks we 
saw on their summits. 
4. Excursion over the hills situated to the east of Loch Laggan^ in 
Lochabei\ Inverness-shire. (IV. and V. were with Rev. Mr 
Peyton.) 
Started from Loch Laggan Inn, and went N.E. by Meall Ghrea- 
lach (1650 feet), BuidE Aonach (3037 feet), along the ridge to 
Creag Meaghaidh (3700 feet), thence descending upon Moy. 
On the south slope of Buidh Aonach^ two grey granite boulders 
were found on a small plat at 2260 feet contour line. 
About the centre of the long ridge, and nearly due N. of the 
centre of Loch Laggan, there is a round and broad eminence 3238 
feet high. This eminence is bedded with gravelly clay, resulting 
apparently from the disintegration of granite belts in the gneiss. 
We counted on this eminence about twenty-four large and much- 
rounded grey granite boulders, identical in character with those seen 
on the south slope of the hill above mentioned. Some of them were 
lying on the surface of the clay, some were half bedded. Veins of 
granite were found in the flaggy gneiss of the hill. In these veins 
there were masses in every stage of being rounded by decay and by 
weathering, becoming loosened out of the gneiss rock, with portions 
of the rock adherent. None were so large as the blocks lying in 
the adjoining district. 
It occurred to me that many grey granite blocks considered to be 
boulders may have originated in this way, and may have been 
pushed from their birthplace, — as, for example, the blocks seen on 
the south slope of the hill above referred to. 
In last year’s Eeport reference was made to grey granite boulders 
seen on or near the top of Craig Dhu (2161), at the mouth of Glen 
Koy, about 15 miles west of Buidh Aonach. Might these not 
have originated in the same way 1 No veins, however, were seen on 
Craig Dhu. 
5. District near Loch Clunie^ north of Caledonian Canal. 
1. In driving up Glen Morriston^ we observed at the east end of 
the summit of a hill about 1000 feet above the sea, near the junction 
