of Edinburgh, Session 1879 - 80 . 587 
of the lateral valley AB, and the other nearly parallel with Loch 
Gilp valley. 
At the mouth of this lateral valley, at / on the sketch, a number 
of boulders were found at a height of about 670 feet above the sea, 
lying on the hill slopes facing the N.W. Some of these were in 
such positions as showed transport from the H.W. One example is 
given in fig. 3, plate XVIII., where a boulder A, 4 feet high by 
2| feet wide, was resting against the X.W. sides of rocks B, on their 
W.KW. sides. 
On proceeding to the head of this lateral valley, about 1 mile dis- 
tant, and at a height of about 795 feet above the sea, I found 
numerous boulders, many of large size, resting chiefly on rocks and 
hill slopes, facing W.N.W., and with their longer axis lying much 
in the same direction. One of these measured 12x6x5 feet. 
There were several smoothed but no striated rocks. At one place, 
however, at a height of 650 feet above the sea, I found a mass of 
softish Silurian rocks traversed by a hard quartz vein about 2 inches 
thick, standing up above the Silurians, as shown by A in fig. 4, 
plate XVIII. This vein had been evidently ground down by some- 
thing which had passed over it from W.X. W. The quartz retained a 
beautiful polish, but the Silurian rock, though it had once presented 
a smooth flat surface, had become rough by atmospheric action. 
Being softer than the quartz vein, it had been ground down more 
effectually by the agent which had passed over. 
9. Loch Killesport . — Having been informed by Mr J. F. Campbell 
of Islay (author of “ Frost and Fire ”) that the largest boulder he had 
seen in Scotland was on the south side of Loch Killesport , near 
Ormsary House, I went there in company with Mr Alexander of 
Lochgilphead, who was so obliging as to undertake to be guide. 
His local knowledge was of much service to me. 
We went first to some boulders a little beyond Ormsary House on 
the sea-shore. One (of gneiss) had a girth of 65 feet and a height 
of 16 feet. It was tolerably well rounded, its sharpest end pointing 
N.W. Another measured 17x13x5 feet, its longer axis lying 
H.W. by W. Another measured 24 x 12 x 5 feet, its sharpest end 
pointing W.S.W. 
The largest boulder was situated about \ of a mile east of Ormsary 
House, on the south side of the coast road, adjoining a ruinous 
