IN THE SOUTH OF ARRAN. 529 



under No. 11 to the west, at an angle of 75° ; but the dips in all these clay beds 

 are very deceptive. 



Above the church there is a flat open space in the bottom of the valley. In 

 the centre of this flat a bank slopes out from the hill side above, and breaks 

 abruptly in the middle of the field, presenting a face 20 feet high. On the top is 

 seen coarse water-rolled gravel — below is fine clayey sand. This seems to be the 

 Avreck of the superficial deposits, which had once covered the whole flat. Just 

 below this, in the burn course, I found, resting on the boulder-clay, a layer of fine 

 clay, buried beneath sand and gravel, and containing dead equisetum roots, which 

 I have no doubt are modern ; but the depth to which this plant penetrates is 

 often very deceptive. These beds seemed to form a lower member of the super- 

 ficial deposits mentioned above. 



In the centre of the field a boss of felstone porphyry projects above the flat. 

 It has the form of a roche moictonnee, but I could not satisfy myself that it was 

 striated. 



Above this the boulder-clay banks are of great size, but I did not examine 

 them carefully. In the upper part of the valley, at 450 feet above the sea, and 

 near the path leading over to Lamlash, I found a well striated face of greenstone. 

 Further on, at the same height in the burn course, is a bank of boulder-clay, 

 rising to 40 feet above the burn, but the lower part of the bank, for 20 feet, is 

 formed of the friable shale rock of the district. Close by, however, the boulder- 

 clay has fully this depth, and is hard, firm, and flakey in texture. This is just 

 below the farm of Stragael. In the valley bottom here is a flat, where the 

 boulder-clay is covered with gravel. At 570 feet above the sea, just above the 

 farm of Stragael, is a great bed of sand with a few stones. At 800 feet above 

 the sea, the boulder-clay banks beside the burn are still 30 feet high. At 1100 

 feet it is 10 feet thick ; but at 1130 it is thin and sandy, and the shales appear in 

 broken angular fragments close to the surface. On the hill-side, north from this, 

 at 100 or 200 feet higher, it again lies thicker, but I could not examine this 

 locality minutely. At 1250 feet there are well striated bosses of felstone. 



The Cloinoid Burn is a branch which joins the Torlin Burn from the N.N.E., 

 about a mile, or rather less, from the sea. Between the burns the land swells up 

 in a rounded back, which is, however, very little higher than the edge of the great 

 boulder-clay banks which line the burns. The valley is very narrow in its lower 

 part, and the banks high and steep ; but they are much obscured by debris, so 

 that the details of the boulder-clay can seldom be followed for any distance. The 

 best section of them occurs about a mile above Lag, from 160 to 200 feet above 

 the sea, the top of the bank rising from 240 to 340 feet above the sea, or from 

 '80 to 140 feet above the burn. This section extends, with interruptions, for 

 several hundred yards. It may best be considered in two parts. The first part 

 (Plate XXL, fig. 3), is about 80 feet high and 200 yards long. At the 



