of Edinburgh, Session 1880 - 81 . 251 
Its position between the hills is indicated hy x on the annexed 
diagram (fig. 1), which shows the ground plan of a narrow valley, 
open at each end, about 500 yards in length, about 50 yards wide, 
and with sides from 200 to 300 feet high. Fig. 2 shows a section 
) 
across this valley, with the boulder on the west side, upon a shelf, 
at the height of about 250 feet above the sea. The boulder measures 
11x6x5 feet, and the longer axis points N’.N.W. and S.S.E. 
The axis of the valley, which rises to the south, is N.W. and 
S.E. 
The rocks here are clay slate, the boulder is grey granite. 
In reference to the transporting agent, it is almost certain that 
the boulder must have been brought into the valley, by either its 
north or its south end. 
Erom the boulder, Ben Cruachan is visible, bearing E.S.E. at 
a distance of about 10 miles. If a glacier be thought of to bring it 
from Cruachan, there are hills and valleys in the way, rendering the 
course of a glacier along that line most improbable. The more 
natural course of a glacier would be down Loch Etive. On the 
other hand, there seems to be nothing improbable in the supposi- 
tion, that it may have been brought by floating ice from the north. 
