THE PARALLEL ROADS OF GLEN ROY 221 



the col to the highest road of the latter glen, and pursued 

 it exactly as he had pursued the road in Glen Gluoy. 

 For a time it belted the mountain sides at a considerable 

 height above the bottom of the valley; but this rose as 

 he proceeded, coming ever nearer to the highest shelf, 

 until finally he reached a col, or water- shed, looking into 



PARALLEL ROADS OF GLKN ROY. 



After a Sketch by Sir Thomas Diclc-Lauder. 



Glen Spey, and of precisely the same elevation as the 

 highest road of Glen Koy. 



He then dropped down to the lowest of these roads, 

 and followed it toward the mouth of the glen. Its eleva- 

 tion above the bottom of the valley gradually increased; 

 not because the shelf rose, but because it remained level 

 while the valley sloped downward. He found this low- 

 est road doubling round the hills at the mouth of Glen 

 Roy, and running along the sides of the mountains which 



