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YI.— ON THE GEOLOGICAL STEUCTURE OF THE 

 NORTHERN HIGHLANDS OP SCOTLAND; BEING 

 NOTES OF A RECENT TOUR, by EDWARD HULL, 

 LL.D., F.R.S., Director of the Geological Survey of Ireland, 

 Plates 9, 10, and 1L 



[Read, December 20th, 1880.] 



The folio wing notes were made during a tour in the North 

 Highlands of Scotland during the spring of 1880, under the 

 guidance of Professor Geikie, Director of the Geological Survey 

 of Scotland, in company Mr. R. G. Symes, of the Geological Sur- 

 vey of Ireland, and several other friends ; the object being to 

 observe the character of the geological formations of that district, 

 with a view to a comparison with those of the north-west of 

 Ireland, where the operations of the Survey are about to com- 

 mence.* 



The author could not hope to be able to communicate much 

 information (if any) absolutely new, but the physical features 

 and geological phenomena proved of such interest, and of so re- 

 markable a character that he hoped a brief outline of his obser- 

 vations would not prove unacceptable. 



The course taken was as follows : — Reaching the village of 

 Garve, near DingwaU, by the Highland Railway, the road lay 

 right across that part of Scotland to the head of Loch Broom 

 and Ullapool, through the beautiful glens of Braemore, which 

 open on the head of Loch Broom. Thence to Inchnadamff, 

 which lies at the head of Loch Assynt, and close to the base of 

 Ben More, Canisp, and Quenaig. Thence to Scourie and Rhi- 

 conich, which is only a few miles distant from Cape Wrath, and 

 then across Scotland to Lairg, where the railway to the south 

 was reached. By this route two traverses across the country, at 

 a distance of about thirty miles from each other, were made, 

 and the western coast for a distance of about fifty miles was 

 examined. 



The geological structure of this district has only recently been 

 clearly and definitely demonstrated by the researches of the late 



* This visit was an official one, made with the sanction of the Director-General. 



