196 
Proceedings of the Royal Society 
seemed probable, from the positions of the boulders, that boulder 
B was the first to come, and that the others subsequently had 
been intercepted by B in their further progress eastward. 
From this hill the three Paps of Jura, 2500 feet high, are visible, 
bearing W.N.W. The more distant island of Mull, reaching to a 
height of 3000 feet, bears N.N.W. If the boulders on Loch 
Killesport, above described, came from either of these sources, they 
must have crossed, not only two sounds or arms of the sea, but also 
the two or three tongues of land which project from this part of the 
coast of Argyle. Before, however, that suggestion can be favoured, 
it would require to be shown that the rocks composing the boulders 
are similar in composition to rocks in Jura or Mull. 
To the west of the Tign-na-Kain hills, above described, there is 
another hill, separated from them, by a small valley, on which many 
boulders are visible, on the side of the hill sloping to the north. 
This hill is almost 100 feet higher; but I could not ascend it, much 
to my regret. 
I'^tli Jidy 1882, Taynisk House^ on Loch Sweyn, the property 
of Captain Campbell of Inverneil. — The house, garden, and policy 
are at the point of a narrow tongue of land, on the south side of 
Loch Sweyn, which projects into the loch in a S.S.W. direction. 
Near the point where this tongue reaches the sea there is on it 
a ridge, running (by compass) about W. by S., with a breadth 
of about 100 yards, and rising eastwards to a height of about 100 
feet above the sea. 
This tongue of land, especially on its higher parts and on its 
northern slope, is covered by above 50 boulders, the largest of which 
are of the following sizes ; — 
18 X 11 X 8 feet. Its longer axis lies W. by S., and small end to 
west. It lies on the broken edges of vertical strata, as shown 
in diagram 4. Its longitudinal axis dips to west, at an angle 
of about 20°. r, r, r are edges of the rocks in situ on which 
the boulder rests. 
15x19x5 feet. Its longer axis is N.E. and S.W. 
8x4x3 feet. „ W. by S. 
8 X 4 X 2| „ W. by S. with small end to 
westward. 
9x6x4 feet. Its longer axis W. by S. 
