OF THE OUTER HEBRIDES. 859 



8. Miuleidh (Miuley) shows well-rounded hills that rise to a 

 height of 880 feet. They are somewhat greener than the hills of 

 the other islands immediately to the north. The gneiss appears to 

 be a good deal broken up ; but along the south coast the hill-face is 

 well smoothed and polished in the direction of the Sound of Bear- 

 nareidh. Till was seen on the shore at Sloe Chreimisgeo. The dip 

 of the gneiss is north-east and east, the west coast being one great 

 cliff nearly on the line of strike. 



9. Bearnareidh (Bearnarey). — This island attains a height of 

 630 feet, arid is tolerably well clothed with grass. The highest 

 part is the ridge that runs along the south coast; from this the 

 ground slopes steeply down to the Sound of Bearnareidh. Cliffs 

 600 feet high, and nearly vertical form the southern shore. The 

 dip and strike of the gneiss are the same as in the adjoining islands. 

 We landed on Bearnareidh, and spent some time in examining the 

 glacial phenomena. Near the Storehouse and along the road, and 

 for some distance up the hill across the face of which the road 

 winds, are finely smoothed rock-faces, on some of which the striae 

 are well seen. I noted seven or eight surfaces of this kind. Fre- 

 quently, however, the rock has " skinned," and only the deeper ruts, 

 and sometimes not even these, are visible. The several bearings I 

 took varied from W. 30° N. to W. 35° N., the striae and roches 

 moutonnees evidently pointing to, and not away from, that direction. 

 Along the ridge of the island the gneiss crops up in broken ledges, 

 which are distinctly bevelled off by glacial action, but the striae have 

 not been preserved. Mr. Campbell mentions the occurrence of ice- 

 marks bearing N.N.W. magnetic, " crossing the strike of the rock on 

 a ' tor' near the old fort," at Barra Head. We searched every face 

 of rock at Barra Head for these marks, but were not fortunate 

 enough to find them. The rocks thereabouts, however, are clearly 

 glaciated ; but their surfaces have scaled off or mouldered away, and 

 the striae have consequently disappeared. There is a boss of rock 

 behind the lighthouse which is ice-worn, and may be the one 

 referred to by Mr. Campbell ; but although we had an exceptionally 

 bright day, we could not make out even the " ghosts of scratches " 

 upon its surface. That surface is certainly weathered. Many loose 

 boulders and blocks are scattered over the ridge, and some of them 

 are glacially abraded. Not a few, however, looked as if they had 

 been wedged off the ledges of gneiss by human agency. Many, at all 

 events, have been used to mark out the boundaries of fields at some 

 distant period, for they are ranged in rows all over the hill- top, 

 some slabs still standing erect and others now lying prone. On the 

 lower slopes of the island a thin sprinkling of till occurs here and 

 there. 



xi. greneral remarks on the physical features of the 

 Long: Island. 



In traversing the Long Island from the Butt of Lewis to Barra 

 Head, one cannot fail to observe that there are two separate 

 elements which have combined to produce the present configuration 



