There was a period when maps of the world were published whereon the part occupied by the continent of Australia was a blank space. On other maps, dating from about the same time, land masses were represented which we now know to have been imaginary. Let us look at four examples.
The first is a map drawn by Robert Thorne in the reign of Henry VIII (1527). He said in an apology for his work that 'it may seem rude,' and so it was; but it serves the purpose of proving that Thorne and the Spanish geographers from whom he derived his information knew nothing about a continent near Australia. Sixty years later a map published at Paris showed a portion of New Guinea, but still the place occupied by Australia was left as open ocean. A Dutch map published at Amsterdam in 1594 did indeed indicate a large stretch of southern land, and called it Terra Australis, but it bore no resemblance to the real continent either in shape or situation. In 1595 a map by Hondius, a Dutchman living in London, was published to illustrate the voyage of Francis Drake round the globe. It represented New Guinea as an island, approximately in its right position, though the shape of it was defective. To the south of it, and divided from it by a strait, appeared a large mass of land named Terra Australis. The outline is not much like that of the continent of Australia, but it was apparently copied from an earlier Dutch map by Ortelius (1587), upon which were printed words in Latin stating that whether New Guinea was an island or part of an austral continent was uncertain. Many other early maps could be instanced, but these four will suffice to exhibit the defective state of knowledge concerning this region at the end of the sixteenth century.
By that time the belief had grown that there probably was a large area of land in the southern hemisphere. Much earlier, in the Middle Ages, some had seriously questioned whether there could possibly be antipodes. Learned and ingenious men argued about it, for and against, at considerable length; for it was much easier to write large folios in Latin about the form of the earth than to go forth in ships and find out. One famous cosmographer, Cosmas Indicopleustes, scoffed at the very idea of there being countries inhabited by people who walked about with their feet opposite to those of Europeans and their bodies (as he imagined) hanging downwards, like flies on a ceiling. How, he asked, could rain 'be said to "fall" or "descend," as in the Psalms and Gospels, in those regions where it could only be said to come up?' Consequently he declared ideas about antipodes to be nothing better than 'old wives' fables.'
Another class of speculators maintained that there necessarily must be antipodes, because the globe had to be equally poised on both sides of its own centre. As there was a large mass of land, consisting of Europe, Asia, northern Africa, and North America, on the one side of the Equator, they argued that there had to be a balance of earth at the opposite extremity.
To understand how speculation was set at rest and Australia came to be discovered, it is necessary to bear in mind a few facts connected with the expansion of European energy in maritime exploration, trade, and colonization.
During the fifteenth and sixteenth centuries a great and wonderful series of events opened new sea-routes and fresh lands to the enterprise of mankind. There was keen competition to secure the profits arising from trade with the East--from the silk and cotton fabrics of China and India, the spices, gold, jewels and metal work, the rice and sugar, and many other things which European peoples were glad to purchase and oriental lands could supply. This trade had in earlier years come partly overland, along caravan routes to the Levant, partly by water to the Red Sea, and then through Egypt to Alexandria. The goods were collected by Venetians, Genoese, and other merchants, chiefly Italians, in vessels plying in the Mediterranean, and sold to European buyers. But the Portuguese discovered that by sailing round Africa they could bring commodities from the East cheaper and safer than by the old routes. They had made many voyages down the west coast of Africa during the fifteenth century, until at last, in 1486, Bartholomew Diaz steered his ships round the Cape of Good Hope, and in 1497 Vasco da Gama beat that record by conducting two vessels all the way to India and back to Lisbon.
That was one important step towards the discovery of Australia--the finding of the way to the East from Europe by sea.
It was for the purpose of discovering a still shorter route to the east that Christopher Columbus, a Genoese in the service of Spain, proposed to sail west. He argued that if the world were round, a ship sailing west, straight towards the sunset, must come upon the shores of further Asia. His reasoning was right, but there was one immense factor which it was impossible for him to anticipate. He could not know that the path to the East by the westward passage was blocked by the continent of America. Columbus, indeed, never did realize that fact to the day of his death. He never knew that he had found a new world. He always believed that he had discovered what we may call the back door of Asia.
The Spaniards, having possessed themselves of America through the discoveries of Columbus and his successors, were still dissatisfied when they realized that this new continent was not the Orient whence their Portuguese rivals drew so rich a trade; and for many years they searched for a strait through it or a way round it. When their explorers crossed the narrow isthmus of Panama they saw before them an ocean hitherto unknown to Europeans. This, then, was the sea which Columbus had striven to reach when his track was barred by the American continent. This was the sea which it was necessary to traverse to get to the spice islands by the western route. Columbus was now dead, but Spain had other gallant navigators in her service. One of them, Ferdinand Magellan, in 1520, led the way down the east coast of South America, through the narrow passage named after him, and into what he for the first time called Mare Pacificum, the quiet sea.
That was the next important step towards the discovery of Australia--the finding of the Pacific.
To realise the importance of these two series of discoveries, look at a map showing the position of Australia in relation to South America and South Africa, and remember that the main purpose of voyagers by either route was to get as quickly and as safely as possible to the parts with which there was rich trade to be done--to Ceylon, India, China, Japan, Java, the Phillipines, and the Spice Islands. It will be seen that neither the Portuguese sailing round the Cape into the Indian Ocean, nor the Spaniards sailing round South America into the Pacific, would be likely to see the coasts of Australia unless they were blown very far out of their true course, or unless curiosity led them to undertake extensive voyages of exploration. Taking the two sides of a triangle to represent the two routes, Australia lay upon the centre of the base line.
That several ships did, accidentally or in pursuit of geographical knowledge, make a passing acquaintance with parts of Australia during the sixteenth century is suggested by a few charts, though we do not know the name of any navigator who did so.
A curious French map of which six copies are known to exist, dated 1542, presents an outline of a country lying south of Java and inscribed 'Jave la Grande,' the great Java. On a copy which was presented to King Henry VIII (by some one who came to England in the suite of Anne of Cleves, it is conjectured), Java itself was marked by way of distinction as 'the lytil Java,' or Java the small. It is certain that the French map-maker worked from Portuguese information, not from original observations of his own. Allowing for some defects, the map makes it probable that at least one Portuguese ship had sailed not only along the north-western coast of Australia, but also along the east coast, from Cape York to the south of Tasmania, two centuries and a half before the celebrated voyage of Captain Cook.
In 1598 Cornelius Wytfliet, in a book published at Louvain, wrote as follows: 'The Australis Terra is the most southern of all lands, and is separated from New Guinea by a narrow strait. Its shores are hitherto but little known, since after one voyage and another that route has been deserted, and seldom is the country visited unless sailors are driven there by storms. The Australis Terra begins at two or three degrees from the Equator, and is maintained by some to be of so great an extent that if it were thoroughly explored it would be regarded as a fifth part of the world.' Those from whom the Louvain geographer drew his information seem to have had a correct knowledge of the division of New Guinea by a strait from the land to the south of it, but they imagined that the southern continent was far vaster than was actually the case. The supposed Terra Australis of these old cosmographers was indeed a continent stretching right round the South Pole.
The evidence concerning Australian discovery before the seventeenth century is so clouded with doubt that it has been asserted to be unworthy of credence. It has been argued that there is 'no foundation beyond mere surmise and conjecture' for believing that any part of this country was known to Europeans until the Dutch appeared upon the scene in 1606. We certainly do not know the name of any sailor who made discoveries prior to that date, nor of any ship in which they were made. We have only a few rough charts, the statement of Cornelius Wytfliet, and the persistence of a vague tradition. Yet this evidence, unsatisfactory as it is, cannot be ignored. It is not unlikely that Portuguese ships sailed along the west, north, and east of Australia, and that persons on board made sketches of the coastline. There are difficulties about accepting the map dated 1542 as a representation of Australia. It brings the land called 'Jave la Grande' too near to the island of Java, and it projects the most northerly tongue of that mass between Java and Timor, whereas in fact there is no northern cape of Australia within hundreds of miles of the gap between those islands. But the man who drew the chart of the world of which this formed part used materials obtained from sources unknown to us. He may have had to piece together information from several rough seamen's charts. He may have made mistakes in fitting the parts. We cannot tell.