272 
Proceedings of the Eoyal Society 
At the very head of the col (2480 feet), just where it folds over 
to the watershed, where streams rise to flow in opposite directions, 
“ there are numerous heaps of gravel similar to what are known 
among the Swiss glaciers as ‘ dirt cones.’ These were higher and 
larger in the sides of the trench than in its centre. They continue 
hut a short distance down the valley on each side, diminishing in 
size towards the lower levels.” 
If “ dirt cones ” (as is generally alleged) he formed hy running 
water on the surface of ice, carrying stones over the edges of the 
crevasses and depositing them at the bottom, may it not he inferred 
that there was a mass of ice here which, at the col, broke into two 
divisions, forming a glacier for each valley ? 
(The Professor remarks, that this was the second hardest walk 
during one day which he ever took, the distance travelled being 
26 miles, and the amount of ascent being 7900 feet.) 
Fifth Day . — Eeturned to re-examine the col, going by the valley 
between Ben Chaluim and Ben-nan- Mar sen to top of Greag Mhors 
second top, then over the col to Cram Creag , and back by Glen-a - 
Clacliain. 
No boulders seen. 
Sixth Day. — Prom Tyndrum over Ben Doreann (2523 feet) to 
Inverarnan. No boidders were seen, except some mentioned in last 
year’s Notes (these apparently omitted to be noticed in last year’s 
Eeport), near the bridge over the Orchy. 
Seventh Day. — Examined the sides of Ben More (3843 feet), 
Stob Luib , and the trench of the Dochart. Found the highest 
glacial markings to be upon Stob Luib at a height of 750 feet 
above Luib Eailway Station. 
From the material of the till, and the closed nature of the 
country, the Professor concluded all to be due to a local glacier 
rising in Ben Laogli , and largely fed from Ban-nan-Imarean 
(2769 feet) and other hills north of the Dochart; the glacial striae 
on Stob Luib pointing more to these hills than directly up the glen. 
Ben Laogh bears W.N.W. 
Eighth Day. — Went over Ben More , Am Binnean (3827 
feet), Stob Choice an Lochan (3497 feet), Am Mam (2500 feet) 
Meal Monachyle (2122 feet), down the Braes of Balguliidder 
to Loch Earnhead. No boulders and no glaciation over the great 
