28 On the Phcenician Tin Trade in Conncail, by R. Edmonds. 
in the same bay? The effects of the earthquake waves there, on 
1st November, 1755, I have elsewhere * described. Vast masses 
of shingle on other parts of our coast have doubtless by similar 
means been heaped up to a great height above the present reach 
of the waves ; and, although the floors on which they rest have 
never changed their level, they have been erroneously classed by 
geologists amongst " raised beaches." 
Singularly enough, an instance of this erroneous classification 
seems to have lately occurred in connection with the very irruption 
of the sea now under consideration. At the annual meeting of 
the Royal Geological Society of Cornwall, on the 5th of November 
last, a paper from Mr. Thomas Cornish was read, in which he stated 
that the cliff at Chyandour (two or three furlongs west of the 
long sandbank above mentioned) was about twenty- five feet above 
high -water mark, and consisted of clay, rab, and small stones 
packed tight, and nowhere presenting any signs of disturbance. 
The base of it rested on rock. In taking off the face of the 
cliff, for the purpose of building a promenade wall, the work- 
men came upon a layer of water- worn pebbles, about twenty- 
three feet above high-water mark, and two feet below the upper 
surface of the cliff. The pebbles were of all sizes, from a hen's 
egg down to a pea or a pin's head, and were mostly quartz, 
giving to the whole a white appearance. The layer varied from 
three inches to nine inches in thickness, and had the appearance 
of " the ordinary raised beach.'" It occurs at the distance of about 
a furlong westward from that stream at Chyandour which is 
nearest to Penzance. 
In all probability, this thin layer of pebbles and gravel, two feet 
below the surface of the cliff', was deposited by the same irruption 
of the sea which left the thinner layers of pebble s and gi avel three 
feet below the suiface in the three different parts of the neighbour- 
* 'J'he Land's eud District — its Antiquities and Natural History, p. 101. 
