This statement is credited to only a hundred years before Marco Polo. One naturally suspects some exaggeration. But a parallel account, nearly as expansive and very circumstantial, is given in the same work concerning giant vessels sailing in the opposite direction some six hundred years earlier. It begins: “The ships that sail the Southern Sea and south of it are like houses. When their sails are spread they are like great clouds in the sky.” Professor Holmes, drawing attention to these passages (which he quotes), very justly observes, “who shall say that the mastery of the sea known to have been attained in the Orient 500 A. D. had not been achieved long prior to that date?”[5]
The Atlantis Legend
We may be safe in styling Atlantis (Ch. II) the earliest mythical island of which we have any knowledge or suggestion, since Plato’s narrative, written more than 400 years before Christ, puts the time of its destruction over 9,000 years earlier still. It seems pretty certain that there never was any such mighty and splendid island empire contending against Athens and later ruined by earthquakes and engulfed by the ocean. Atlantis may fairly be set down as a figment of dignified philosophic romance, owing its birth partly to various legendary hints and reports of seismic and volcanic action but much more to the glorious achievements of Athens in the Persian War and the apparent need of explaining a supposed shallow part of the Atlantic known to be obstructed and now named the Sargasso Sea. Perhaps Plato never intended that any one should take it as literally true, but his story undoubtedly influenced maritime expectations and legends during medieval centuries. It cannot be said that any map unequivocally shows Atlantis; but it may be that this is because Atlantis vanished once for all in the climax of the recital.
Phoenician Exploration
It may be that Phoenician exploration in Atlantic waters was well developed before 1100 B. C., when the Phoenicians are alleged to have founded Cadiz on the ocean front of southern Spain; but its development at any rate could not have been greatly retarded after that. The new city promptly grew into one of the notable marts of the world, able during a long period to fit out her own fleets and extend her commerce anywhere. It is greatly to be regretted that we have no record of her discoveries. Carthage, a younger but still ancient Tyrian colony, farther from the scene of western action, was not less enterprising and in time quite eclipsed her; but at last she fell utterly, as did Tyre itself, whereas Cadiz, though no longer eminent, continues to exist. However, in her prime Carthage ranged the seas pretty widely; according to Diodorus Siculus, she was much at home in Madeira,[6] and her coins have been found off the shore of distant Corvo of the Azores. But it cannot be said that any of the Phoenician cities, older or newer, has left any traces of exploration among Atlantic islands other than these or added any mythical islands to maps or legends, unless through successors translating into another language. The crowning achievement of the Phoenicians, so far as we know, was the circumnavigation of Africa by mariners in the service of Pharaoh Necho some 700 years before Christ. This would naturally have brought them en route into contact with the Canary and Cape Verde Islands, and they would be likely to pass on to the Egyptians and Greeks a report of the attributes of those islands partly embodied in names that might adhere.
The Greeks and Romans
We know that the Greeks of Pythias’ time coasted as far north as Britain and probably Scandinavia and had most likely made the acquaintance still earlier of the Fortunate Islands (two or more of the Canary group), similarly following downward the African shore. Long afterward the Roman Pliny knew Madeira and her consorts as the Purple Islands; Sertorius contemplated a possible refuge in them or other Atlantic island neighbors; and Plutarch wrote confidently of an island far west of Britain and a great continent beyond the sea where Saturn slept. Other almost prophetic utterances of the kind have been culled from classical authors, but they have mostly the air of speculation. It cannot be said that the Greeks or Romans devoted much energy to the remoter reaches of the ocean.
Irish Sea-Roving
Ireland was never subject to Rome, though influenced by Roman trade and culture. From prehistoric times the Irish had done some sea roving, as their Imrama, or sea sagas, attest; and this roving was greatly stimulated in the first few centuries of conversion to Christianity by an abounding access of religious zeal. Irish monks seem to have settled in Iceland before the end of the eighth century and even to have sailed well beyond it. There are good reasons for believing that they had visited most of the islands of the eastern Atlantic archipelagoes. We cannot suppose that this rather reckless persistency ended there in such a period of expansion. It is quite possible that we owe to this trait the Island of Brazil, in the latitude of southern Ireland, as an American souvenir on so many medieval maps (Ch. IV). It is certain that the “Navigatio” of St. Brendan scattered St. Brandan Islands, real or fanciful, over the ocean wastes of a credulous cartography (Ch. III).