BEACHES, ETC., OF THE SOUTH OE E]!^GLAND. 293 



(21) Pemhrolceshh^e. — At Tenby a much obscured Eaised Beach 

 and Head, about 12 feet above sea-level, underlie the esplanade. 

 They are better seen at Penally Head. The so-called Bone-Caves 

 of Caldy Island, described by the Eev. G. N. Smith/ will be treated 

 of later (postea, p. 320). The Hoyle Cave, which is also near 

 Tenby, is a true cave, but some distance inland. When I saw it 

 the ground had been much disturbed, and part of the roof having 

 fallen in, the order of superposition was rendered very obscure. It 

 appeared to me that the Cave had been occupied by Man after 

 Pleistocene times. I found only Neolithic flints or flakes. I must 

 refer, however, to the Rev. H. H. Winwood's account,^ as he visited 

 it at an earlier date and when it was more entire. 



Thence to Pembroke there are no Beaches, though in Manorbeer 

 Bay there are rolled fragments of conglomerate, the remnants of a 

 destroyed Beach. I am unacquainted with the coast between Mil- 

 ford Haven and St. Bride's Bay, but I am not aware that any Raised 

 Beaches have there been recorded. At a short distance west of 

 Perth Claus Harbour, and 2 miles south of St. David's, occur a some- 

 what obscured Head and Beach, but without shells. They rest on 

 the upturned edges of the Cambrian rocks, and fronting the present 

 cliff, as shown below : — 



Pig. 12. — Raised BeacJi, ivest of Forth Claus Harhour. 



a. Head, consisting chiefly of angular fragments of purple sand- 

 stone (Cambrian) in a light brown loam 3 ft. (?) 



c. Beach, consisting of subangular fragments of Cambrian and pre- 

 Cambrian rocks, granite, veinstone, porphyry, white quartz- 

 pebbles, and a few chalk-flints — no shells. The divisional line 

 between a and 1 is not clear 5 ft. (?) 



1. Cambrian rocks. 



Another better-marked Beach, 8 feet thick, and covered by lo feet 

 of Head, was pointed out to me by Dr. H. Hicks, at the base of 

 the hills half a mile W. of Perth Claus Harbour. 



The last Beach I had occasion to notice on this coast was in 

 Whitesand Bay, 2k miles N.W. of St. David's, where the remains 

 of it, though extremely fragmentary, are of considerable interest. 



1 Eep. Brit. Assoc, for 1860 (Oxford Meeting), p. 101. 



2 Geol. Mag. for 1865, p. 471. 



