The Spaniards who sailed to the Moluccas in the two remaining ships of Magellan's squadron had practically got into touch with Papuasia, with the lands of New Guinea and its surrounding islands; and had realized that in this direction there lay a new Negroland, a "New Guinea", in fact. Exactly when the New Guinea coast was reached from the west—whether by Alvaro de Saavedra the Spaniard in 1528, or in 1511 and 1526 by the Portuguese who had taken possession of the Moluccas—is not known; nor by whom this very appropriate name was first given. Probably it was named "Nueva Guinéa" in 1546 by a Spanish captain—Ortiz de Retez—who mapped a portion of its northern coast. The impression that this vast island—the biggest in the world—was first called "New Guinea" by Torres when he reached its southern shores in 1607 is incorrect; he, seemingly, was only recognizing a land already named thus for its great superficial resemblance to West Africa. But the Spaniards had heard rumours from the Malay sea captains of a vast land eastward of the Moluccas where there was gold in abundance, besides beautiful birds and curly-haired black people. They jumped to the fantastic conclusion that here lay, not only the Earthly Paradise, but also the Ophir from which Solomon had derived his gold. Mingled with these beliefs was the ever-growing conviction that in this direction must lie a great Southern Continent; and to search for this an expedition was dispatched in 1567 from Callao, the principal port of Peru, under the command of Alvaro de Mendaña de Neyra, with the express purpose of discovering the great Antarctic continent and the "Islas de Salomon". Mendaña voyaged for eighty days across the Pacific, more or less through the equatorial belt, and thus discovered and named the Solomon Islands[42] to the east of New Guinea, believing that they might prove to be the Ophir from which Solomon had derived gold. His expedition surveyed the southern portion of the group, giving to three of the large islands the Spanish names, which they still bear, of San Cristoval, Guadalcanal, and Ysabel.
Juan Fernandez was a Spanish pilot who appears to have given some study to the Straits of Magellan. About 1572 he was venturing out some distance into the Pacific Ocean from the coast of South America, and thus discovered the two little islands which have ever since borne his name, and which proved for a time such an important harbourage and resting place for the Dutch and English navigators who flouted the prohibition of Spain to enter the great Southern Ocean. Fernandez conceived the idea that there must be some large extent of land in the southern half of the Pacific Ocean, and he may have sighted Easter Island, or some other Pacific archipelago, and have believed that it was an indication of the coast line of this Terra Australis.
Mendaña de Neyra, who had returned to the coast of Peru in 1570, was very anxious to organize at once another expedition to extend his discoveries. He was not enabled to do so until the year 1595, when he again started from the coast of Peru with a fleet and a number of Spaniards who were to colonize the Solomon Islands. On his way thither he discovered the Marquezas archipelago (which now belongs to France). Sailing along a course which was more or less that of the tenth degree of south latitude, his ship at last reached the little island of Santa Cruz, the northernmost of an archipelago which is now associated with the group of the New Hebrides. Here, for some reason, his expedition came to a stop, and he landed and attempted to establish a portion of his crew as settlers. But the climate, or some other cause of ill health, brought about the death of Mendaña and many of his companions. He had been accompanied on this cruise by his young wife, who played a heroic part in rescuing the remainder of the expedition. After Mendaña's death, one of his pilots, Pedro Fernandez de Quiros (a Portuguese), brought the remains of the Spanish fleet to Manila in the Philippines. Then in one vessel he boldly sailed back across the Pacific to Peru, and thence made his way to Madrid, where he revealed to the Spanish Government the stories gathered from Malays regarding the existence of a great Southern Continent. He obtained permission from the Court to search for this Terra Australis, and for this purpose returned to South America and started on his quest from Callao (Peru) in 1605. The Viceroy of Peru associated with him, practically as admiral in command of the expedition, Luis Vaez de Torres, as well as a second ship. Directing his voyage across the southern Tropics instead of the northern, de Quiros discovered a small island, which long afterwards was renamed Osnaburg by Cook. A few days afterwards he passed one or more islands of the Tahiti archipelago, which he named "Sagittaria", probably from the month (February, under the zodiacal sign of Sagittarius) in which they were discovered. Sailing on westwards he next reached the group of the New Hebrides. This he believed to be a portion of the coast of the Southern Continent, and he named its largest island[43] Australia del Espiritu Santo, or Australia of the Holy Ghost, this being the first time that the word Australia came into being. He did not pursue his investigations any farther, because his ship's crew mutinied and forced him to sail back again to Mexico.
But his admiral, Luis Vaez de Torres, suddenly abandoned by the ship which had de Quiros on board, was less certain about the actual discovery of this continent, so in 1606-7 he pursued a westward course and thus passed through that strait which separates northern Australia from New Guinea, and thence sailed to the Philippines. He was consequently the discoverer of what is now the British province of Papua, and of the important Torres Straits.
For a long time the Spaniards kept these explorations as State secrets, for they were becoming very much alarmed at the progress in oversea exploration of the Dutch and English. The existence, therefore, of Torres Straits, separating the Australian Continent from the huge Island of New Guinea, remained practically unknown to the world of Europe until the voyages of Captain Cook, more than 150 years later. In fact, Cook, when he rediscovered and mapped the strait between North Australia and New Guinea, was not aware that he had been preceded in that direction by Torres. When, however, this fact was made clearly known through the archives of Spain, the name of the bold Spanish seaman was very appropriately (in 1796) given to a strait of water which is one of the most noteworthy passages from the Pacific to the Indian Oceans, and which may some day become of great importance in the world's history.