ae 
land recognized the evidences of glacial action, consist in the union 
of rounded, polished, striated and furrowed surfaces with morains 
and transported blocks, analogous to the similarly associated phzeno- 
mena upon the Jura and in the Alps. They are described in the six 
following localities. 1st, the morains on the summit level of the road 
between Inverary and Loch Awe: 2ndly, the rounded, polished and 
striated surfaces of granite near the water’s edge at the ferry of Bun- 
awe, and the morains adjacent to it near Mucairn: 3rdly, the polished 
and striated surfaces of granite, between high and low water, at 
the ferry of Ballahulish on Loch Leven: 4thly, the rounded, po- 
lished and striated surfaces, accompanied by morains, in Glen Roy 
and the valley of the Spean; from the position of which they infer 
that the lake, to which many writers have referred the origin of the 
parallel roads of Glen Roy, was caused by two glaciers descending 
from Ben Nevis across the valley of the Spean, in the same manner 
as in 1818 a temporary lake was formed by a barrier of ice in the 
_ Val de Bagnes above Martigny; and as at this time, a barrier formed’ 
by the glacier of Miage protruding across the Allée Blanche is the sole 
cause of the Lake Combal, which would immediately be left dry like 
Glen Roy, should any cause remove the protruding barrier of the 
glacier of Miage*: a fifth locality, in which there is the same con- 
eurrent evidence of morains loaded with transported blocks, and of 
rounded and polished surfaces on the sides and bottom of a moun- 
tain valley, occurs near Sir George Mackenzie's residence at Coul, 
at the south-west base of Ben Wevis: the 6th and last locality visited 
conjointly was the site and neighbourhood of the town of New 
Aberdeen, where the polished surface of the granite had been no- 
ticed by Dr. Fleming, and where remodified detritus of morains 
forms the hillocks of gravel between the town and the sea on the 
north side of the estuary of the Dee, and cliffs of gravel and till or 
boulder clay occur on the south of the same estuary. 
In another communication Dr. Buckland records his observation 
of similar phenomena in the valley of Strathmore; in the highland 
valleys of the Tay and Tumel; on the north-east-shoulder of Schie- 
hallion; in the high pass of Glen Cofield, between Taymouth and 
Strathearn; in Glen Lednoch and Glen Turret, on the north of 
Comrie ; on the sides of Loch Earne; and in the valley of the Teith 
between Loch Katerine and Doune. 
In the lowland districts he notices also the occurrence of rounded, 
polished and striated surfaces upon the top of the basaltic rocks 
of Stirling Castle, on the north face of the Castle Rock at Edin- 
burgh, at Blackford hill, on Calton hill, the Costorphin hills, and 
other hard trap rocks near Edinburgh, many of which have been de- 
scribed and attributed to diluvial action by Sir James Hall. 
In Northumberland Dr. Buckland describes an immense accu- 
- mulation of morains, or detritus of morains, at the east base of the 
Cheviots, near Wooler. And in the lake districts of Cumberland 
and Westmoreland he found the sides of many mountain valleys 
and gorges, by which the waters of these lakes have their exit to the 
* See Captain Basil Hall’s Patchwork, vol. i. p. 114. 
