1873.] CAMPBELL — GLACIAL PHENOMENA OE THE HEBEIDES. 547 



3. Near the north, end of the island, not far from the hills, on 

 their western side, out in the flats, the direction was north 65° west, 

 magnetic. 



4. Wear the chapel at Jochdar, on the northern corner, close to 

 the sea, at the sound of Benbecula, crossing the strike of the rocks, 

 it was north 65° west, magnetic. 



The last two sets of marks are parallel to the run of the tides in 

 the neighbouring sound. The Cuilin Hills in Skye were seen from 

 the spot ; a stick laid in a groove pointed directly at these hills, 

 distant about forty-five miles beyond the Minch. The hills on the 

 eastern side of this island are all glaciated from top to bottom ; and 

 perched blocks abound. I saw them from the steamer with a good 

 telescope ; but I have not been up these hills. 



Benbecula is a flat island, with a single rocky hill in the midst of 

 it. I found no striae ; but all the rocks are glaciated, as in the other 

 islands. Boulders and boulder- clay and drift abound under peat- 

 mosses. 



North Uist. — The whole of this island is glaciated like the rest ; 

 at Loch Maddy, on the east coast, and the northern corner, next to 

 the sound of Harris, the direction is nearly the same as in South 

 Uist, about north 45° west. Drift and boulder-clay are on all the 

 low grounds ; perched blocks and boulders are on all the higher 

 grounds, so far as I could see with the glass. At the north end the 

 strata are nearly vertical ; and the shape of the surface of the country 

 bears no relation to bedding or faults, or contortion of beds. The 

 hills and hollows are carved out of the solid. 



Slcye. — In the north end of Skye, between Dunvegan and Port 

 Portree, the rocks are igneous. Amongst these brown rocks I could 

 not find one single specimen of the grey and glittering boulders which 

 are strewn all over the outer islands. 



In the outer islands I do not remember to have found any boulders 

 like the rocks of Skye. In 1871 I wrote : — ■ 



" Like many a better man, I am at fault ; but, on the whole, I 

 incline to think that the last glacial period was marine in these 

 parts, and that heavy ice came in from the ocean and ground the 

 hollows in the Long Island by help of tides, which ran as tides now 

 run in the sounds." If so, this part of the world was then in the 

 condition of Labrador. Tbere glaciers do not grow on shore, but 

 heavy icebergs and great floes pass along the coast southwards, and 

 ground in shallows and in sounds among firths and islands. 



Since then I have been over Ireland ; and the result is in the May 

 number of the Journal (No. 114), to which I beg to refer. The gla- 

 ciation of the United Kingdom must be treated together as part of 

 a larger system, according to my opinion. 



Lakes, <fec. — The hollows which hold water in the outer Hebrides 

 are so numerous that they must be counted by thousands. Some 

 are peat-holes ; some arc made by artificial or natural dams; but the 

 most of them are rock-basins. I believe these to be part of the 

 general glaciation of the country. Where these basins are near the 

 edge of a cliff, it is seen that the hollow above is the result of wearing 



