of Edinburgh, Session 1883 - 84 . 893 
reaching 2700 feet and 3587 feet above the sea (Abstract, pp. 770 
and 771). 
In Inverness-shire, at the heights of 2000, 3000, and 3155 feet, 
Lochaher (Abstract, pp. 824, 826, and 827); — of 3425, Alhannach 
(Abstract, pp. 828, 829) ; 3407, Schehallion (Abstract p. 830). 
In island of Mull, a boulder on the top of Spyon More, at a 
height of 2435 feet above sea (Abstract, p. 808). 
In Kirkcudbrightshire, at a height of 2764 on summit of Merrick 
(Abstract, p. 837). 
In Glencoe district, boulders found on summits and peaks of 
Aonach and Eagacli, and Meal Dearg, at height of 3110 feet above 
sea. Professor Heddle remarks that “ these boulders lay on a ridge 
not many times wider than their own bulk,” and ‘‘ occupy positions 
much higher in level than any of the hills in a very wide extent of 
country, so that it is difficult, if not impossible, to adopt for them 
the explanation of any local glacier” (Abstract, p. 830). 
The following are cases where boulders are on tops of hills of less 
height above the sea than in the cases just mentioned ; but, being 
higher than any other hills in the district, they present a feature similar 
to that just noticed by Professor Heddle. As examples of these, re- 
ference is made to boulders on East Loch Tarbert (Abstract, p. 775) ; 
Inverary and Loch Awe (Abstract, p. 777) ; Islay Island (Arnahoo) 
(Abstract,^. Forfarshire (Abstract,^. ^01) ] Lochaber (Abstract, 
p. 825) ; Kirkcudbright (Abstract, p. 837); Midlothian (Abstract, 
p. 840) ; and in Sutherlandshire (Abstract, p. 875). Similar cases of 
boulders perched on very precarious positions probably occur in 
Skye, judging by what is said of them by Macculloch and Forbes 
(Abstract, p. 822). 
VI. Gases ivhere Parent Rocks of Boulders have almost certainly 
been ascertained. 
1. In Berwickshire, granite, sienite, porphyry, and whinstone 
boulders are clearly traceable to hills situated several miles to 
the westward (Abstract, pp. 787, 788, 789, 790). 
2. In Roxburghshire there are similar cases (Abstract, p. 865), 
in some instances the parent rocks being at least 20 miles to 
the westward. 
3. In Peeblesshire, a quartz boulder, with much probability referred 
to beds of quartz about 80 miles to the westward (Abstract, p. 855). 
