1900-1901.| A Geological Trip. 167 
with little to break the monotony. The underlying rocks of 
the whole of this district consist of plicated and drawn out 
schistose rocks (Plate XIV. 1), the geological age of which 
still remains undetermined. At Oykell Bridge, where there is 
an inn for the accommodation of salmon-fishers, we cross the 
Oykell river, a swiftly flowing stream, which has eaten for itself 
a channel in these same rocks. They are well exposed on its 
banks. In process of time Aultnacallagach is reached. It is 
neither a town nora village, but consists of an inn with a 
wooden annex, stables, a few sheds, and perhaps two or three 
cottages. The accommodation is good and the fare excellent. 
Situated close to the margin of Loch Borrolan, with the high- 
way only between, and the great mass of Cnoc-an-Sroine rising 
behind, the name Aultnacallagach means the burn of the 
deceiver. I found it to be a great place for trout-fishing, and 
several gentlemen were staying at the hotel for that express 
purpose. The sport is excellent, as there are about five lochs 
connected with the hotel. When we became acquainted, we 
. had many disputes regarding the merits of fishing on the one 
hand and the study of geology on the other as a means of 
spending a holiday. I was in a very small minority, but 
stuck to my guns with determination, and endeavoured to show 
that I had the advantage, Ist, financially, and 2nd, in the en- 
during results when the holiday was finished. 
One great advantage of Aultnacallagach is the long daylight 
in summer. It has a few drawbacks, however. The weather, 
which I found to be exceedingly capricious, limited my excur- 
sions considerably. Then another and formidable foe appeared 
in the form of the light and airy midge, also in the more cum- 
brous but not much more venomous clegg. I had not 
reckoned with these interesting parties when I laid my plans, 
and suffered severely in consequence. However, one of my 
fishing friends had a bottle of a compound the name of which 
spelt death to any midge that had the hardihood to absorb the 
least particle of it into his system. This compound is to be 
freely rubbed over the skin, and it will entirely prevent 
midges biting at all. I don’t know much about insects per- 
sonally,—I am afraid my energies have been rather exerted to 
compass their destruction than to study their anatomy. I was 
assured, however, by my friend that the usual tactics of the 
