I. On the Parallel Roads of Lochaber. ^t/ Thomas Lauder 

 Dick, Esq. F. R. S. Edin. 



(Read March 2. 181 8 J 



X Had last winter the honour of laying before the Royal So- 

 ciety a few hasty remarks on what are called the Parallel 

 Roads of Glen Roy, suggested to me by an accidental ramble 

 through that valley, in the course of a pedestrian tour in the 

 West Highlands,' during the previous August. My curiosity 

 having been much excited by what I then saw, I was induced 

 to revisit the highly interesting district of Lochaber, in the be- 

 ginning of last June, and had thus an opportunity of devoting 

 three whole days to a more complete inspection of these re- 

 markable shelves, which I was surprised to find, were to be 

 traced through a much more extensive stretch of country than 

 former observation had led me to imagine. My first visit to 

 Glen Roy was accidental ; but upon this late occasion, I went 

 with the purpose of endeavouring to put myself in possession 

 of all the facts I could possibly collect, regarding these curious 

 appearances ; and in doing this, I had several advantages which 

 I did not formerly enjoy. I was accompanied by my friend 

 Mr Maclean, civil engineer, who kindly assisted me in ascer- 

 voL. IX. p. I. A taining 



