[cont.] "..."Strabo expressly tells us that the Cassiterides (so called from the Greek name of tin, there produced) were in his time only ten in number; whereas they are now divided into a hundred and forty rocky islets. Solinus also makes mention of a large and respectable island, called Silura, evidently the Scilly of present times, lying on Damnonian or Cornish coast, and separated from the mainland by a strait turbulent and dangerous--a character which sufficiently marks the compression of its waters. And William of Worcester, an author of our own country, thirteen centuries after Solinus, states, with a degree of positive exactness, stamping authenticity upon its recital, that between Mount's Bay and the Scilly Islands there had been woods, and meadows, and arable lands, and a hundred and forty parish churches, which before his time were submerged by the ocean. Uninterrupted tradition since this period, which subsists to the present day vigorous and particular, authenticates his account, and leaves no doubt upon the wind that a vast track of land, which stretched anciently from the eastern shore of Mount's Bay to the north-western rock of Scilly (with the exception of the narrow strait flowing between the Long-ships and Land's End), has, since the age of Strabo and Solinus, and previous to that of William of Worcester, been overwhelmed and usurped by the waves of the sea. . . . The depth of the water at the Land's End is about eleven fathoms; at the Long-ships, eight; to the north of them, twenty; to the south, thirty; and twenty-five, twenty, and fifteen fathoms between them and the north-west of Scilly. The shallowest water occurs in the mid-space between Cornwall and the Isles. "--A Tour through Cornwall in the Autumn of 1808, by the Rev. Richard Warner.
"Yet the cause of that inundation, which destroyed much of these Islands (the Scilly Islands), might reach also to the Cornish shores, is extremely probable, there being several evidences of a like subsidence of the land in the Mount's Bay. The principal anchoring-place, called a lake, is now a haven, or open harbour. The Mount, from its Cornish name, we must conclude to have stood formerly in a wood, but now, at full tide, is half a mile from the sea, and not a tree near it; and in the sandy beach betwixt the Mount and Penzance, where the sands have been dispersed by violent high tides, I have seen the trunks of several large trees in their natural position."-- Borlase, Phil. Trans., vol. xlviii. part I..... [cont.]"