1862.] JAMIESON GLACIATION OF SCOTLAND. 183 



§ 10. In Scotland the whole debris resulting from the erosion of 

 the rocks has often been swept clean oif, — over most of the glens 

 in the North and West Highlands such is the case to a remarkable 



Yig. 5. — SJcetch-map of Scotland, showing the Direction of the Glacial 

 Marhings observed in different parts of the country. 



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N.B. — The headless arrows indicate that the side from which the agent moved 



is not certain, 



— >— Direction of Glacial stride. 



Note. — In this little map I have availed myself of the materials contained in 

 a map of the middle region of Scotland which accompanied an excellent paper 

 by Mr. C. Maclaren in the ' Edinburgh New PhilosophicalJournal ' for 1849, and 

 liewise of various scattered notices by Murchison, Nicol, Milne-Home, Cham- 

 bers, Forbes, and Smith of Jordan-hill. 



degree. I was much struck with this on the high barren ridge border- 

 ing the Crinan Canal, where the reservoir-lakes are situated. The 



