146 GEOLOGY OF ARRAN. 



was the first to notice this interesting junction; and it is 

 well described by him. Several other junctions may be seen 

 in the branches of the main stream. 



A little farther down the glen, and less than one mile 

 from the bridge, some well-marked glacial striae are seen on 

 the road-side, upon a mass of slate in situ. They cross the 

 laminae, and are directed nearly due east and west. The 

 slate also is rounded off. On the hill to the north, some 

 great blocks of coarse granite rest upon the slate. These 

 travelled blocks reach a good way up the south front of the 

 coast range; but in crossing, on one occasion, along the 

 summit, keeping generally near the edge of the cliffs, we did 

 not find a single block. It would seem, therefore, that the 

 few, and comparatively small blocks, on the north shore, 

 must have worked round, from either side, under the force 

 of the waves. Slate was found everywhere on the summit, 

 and far down upon the steep fronts, where the junctions take 

 place. Some curious varieties of slate will be observed in 

 the river bed, on both sides of the bridge. A short distance 

 below the bridge we leave the slate, and after an interval 

 come on coarse conglomerate, no junction being visible. 



Many years ago, a large population, the largest then 

 collected in any one spot in Arran, inhabited this glen, and 

 gained a scanty subsistence by fishing and by cultivating 

 fertile plots on the sunny hill-sides. In 1832, the whole of 

 the families, amounting to 500 persons, were obliged to 

 leave the island, but were furnished with the means of 

 reaching New Brunswick. They formed a settlement at 

 Chaleur Bay, which became very prosperous. Garden en- 

 closures, tree-clumps, solitary fairy thorns, and ruined wall- 

 steads, still remaining, give a melancholy interest to this 

 secluded glen. 



Near the summit level of the road between North and 

 South Sannox, and a little to the north of Sannox House, 

 the sandstone strata, on the east side of the road, are marked 

 with striae, rendered somewhat fainter than those on the 



