W. A. E. ZTssher — 'Pod-Tertiary Geology of Cornwall. 169 



upon large rolled pebbles arranged in regular lines and about 5 feet 

 above high water at their base. 



c. The same observer says that the whole of the outer portion of 

 the Lowlands in St. Keverne parish (a flattish tract of 60 acres in 

 extent) is formed of very fine sand (valued for constructing moulds 

 for brass casting), so similar to that overlying the Coverack raised 

 beach that he considered them contemporaneous. At and near the 

 coast-line pebbles were occasionally met with in the sand. 



d. Mr. Budge mentions a rampart of large diallage pebbles round 

 a low fortress of sand upon the present beach at Coverack. 



e. Dr. Boase (T. B. G. S. Corn. vol. iv. p. 329) mentions the occur- 

 rence of diluvium of an ochreous colour consolidated toward its base, 

 and containing small pebbles of quartz, compact felspar, and serpen- 

 tine, resting on serpentine, near Coverack Quay. 



/. De la Beche (Report, p. 129) and Godwin- Austen (Q. J. G. S. 

 vol. vii. p. 121), comment on flints occurring in the Coverack raised 

 beach. Mints also occur in the present beach at Porthbeer Cove, 

 south of Coverack. 



8. Gunwalloe. The cliffs are capped in places by a Head of light 

 brown loam with angular stones. 



The Lizard District south of a line between Porthbeer Cove and 

 Mullion was not observed by me, nor can I find any descriptions of 

 Pleistocene phenomena on its sea-board. The low cliffs to the south 

 of the Loo bar are capped by about 5 feet of brown loam with 

 angular fragments of quartz, etc., under coarse brownish blown sand. 



9. Coast from Loo Pool to Marazion. 



a. De la Beche (Beport, p. 130) figures part of a raised beach be- 

 tween the Loo Pool and Cove village, stained by black oxide of iron, 

 and containing strings of the same substance, the prevalence of which 

 in the rocks of South Cornwall is pointed out. 



b. Mr. Henwood (T. B. G. S. Corn. vol. v. p. 51) noticed patches 

 of granite and slate pebbles, from the size of a nut to a foot in 

 diameter, in Tremearne Cliff. The deposits rested on slates at 11 feet 

 above the present beach, in one spot, and at 30 feet in another, going 

 eastward. 



c. (op. cit.) "At Wheal Trewavas, where the rock is wholly com- 

 posed of granite, it is covered by a thick bed of transported frag- 

 ments of micaceous slate." 



d. On the west of Pra Sands, Mr. Henwood (op. cit.) noticed a 

 bed of granite, elvan, and slate pebbles, at about 6 feet above the 

 present beach, and covered by " a high bank of rubbish," the debris 

 of the adjacent rocks. 



e. Between Cuddan Point and Trevean Cove, the Head consists 

 of dark grey loam with angular (local) fragments. 



/. The Perran Sands are bounded by cliffs from 5 to 20 feet high, 

 partly composed of brown loam with angular stones and blocks of 

 greenstone. 



g. In a cove west of Perran Sands and south of Perranuthno ; in 

 one part — 



