886 
Proceedings of the Royal Society 
II. ^ize or Weights of Boulders. 
It will be seen from tbe Abstract, and still more from the 
Annual Keports, that the dimensions of the boulders, when of con- 
siderable size, are in most cases there given. But in this Summary, 
it may be sufficient to refer to cases of boulders made known to the 
Committee exceeding 10,0 tons in weight. 
The element of large size or weight has some bearing on the ques- 
tion, What could be the agency by which boulders were transported ? 
especially if it appears that many were transported great distances, 
and across valleys and hill ranges, as to fulfil these conditions 
the transporting agent would require to be of peculiar power and 
magnitude. 
Examples on Bpulders exceeding 100 Tons in Weight. 
1. On Mainlcmd. 
Aberdeenshire — Chapel Garioch, boulder 250 tons (Abstract, p. 771). 
Kemnay, two boulders, 270 and 380 tons (Abstract, 
p. 77-1). 
ArgylesMre — Kilhenzie, boulder 150 tons, 
Loch Goil, 
Loch Long, 
Loch Fy no, 
Gareloch, 
Loch Awe, 
300 
380 
286 
240 
130 
13,6 
(Abstract, 773, 774, 
776). ' 
(Abstract, p. 777). 
(Abstract, p. 778). 
Loch Killesport, two boulders, 106 and 300 tons 
(^Abstract, p. 778). 
Loch Killesport, boulder 2770 tons (Abstract, p. 779). 
„ „ 520 „ (Abstract, p. 779). 
Clach Briach „ 138 ,, (Abstract, p. 779). 
Taynish, two boulders, 108 and 116 tons (Abstract, 
p. 780). 
Appin, two boulders, 1 24 and 292tons (Abstract, p. 784). 
Loch Creran, two boulders, 280 and 380 tons 
(Abstract, p. 784). 
