Porto Santo and Madeira, though near neighbours, are contrasts in most respects. The former has yellow sands and brackish water, full of magnesia and lime, which blacken the front teeth; the latter sweet water and black shingles. The islet is exceedingly dry, the island damp as Devonshire. Holy Port prefers wheeled conveyances: Wood-and-Fennel-land _corsas_ or sledges, everywhere save on the New Road. Finally, the wines of the northern mite are comparatively light and acidulous; of the southern, luscious and heady. Both scraps of ground are of kindred although disputed origin. Classicists [Footnote: Plato, _Timaeus_, ii. 517. His 'fruit with a hard rind, affording meat, drink, and ointment,' is evidently the cocoanut. The cause of the lost empire and the identity of its site with the Dolphin's Ridge and the shallows noted by H.M.S. _Challenger_, have been ably pleaded in _Atlantis_, &c., by Ignatius Donnelly (London, Sampson Low, 1882).] find in these sons of Vulcan, the _débris_ of Platonic Atlantis, a drowned continent, a 'Kingdom of Nowhere,' which some cataclysm whelmed beneath the waters, leaving, for all evidence, three shattered groups of outcrops, like the Channel Islands, fragments of a lost empire, the 'bones of a wasted body.' Geologists, noting that volcanoes almost always fringe mainlands, believe them destined, together with the Cape Verdes, to rampart in future ages the Dark Continent with a Ghaut-chain higher than the Andes. Other theorists hold to a recent connection of the Madeiras with Mount Atlas, although the former rise from a narrow oceanic trough some 13,000 to 15,000 feet deep. Others again join them to Southern Europe and to Northern America. The old Portuguese and certain modern realists make them a continuation of the Serra de Monchique in the Algarves, even as the Azores prolong Cintra; and this opinion is somewhat justified by the flora, which resembles in many points the tertiary and extinct growths of Europe. [Footnote: Such is the opinion of M. Pégot-Ogier in _The Fortunate Islands_, translated by Frances Locock (London, Bentleys, 1871). Moquet set the example in 1601 by including Madeira also in the 'Elysian Fields and Earthly Paradise' of the ancients.]