The tracks of other European navigators of the South Pacific Ocean, were, in a great measure, regulated by those of the Spaniards; and consequently limited within the same narrow bounds. With the exception, perhaps, of two instances only, those of Le Maire and Roggewein, no ships of another nation had entered this sea, through the Strait of Magalhaens, or round Cape Horn, but for the purposes of clandestine trade with the Spaniards, or of open hostility against them: purposes which could not be answered, without precluding any probable chance of adding much to our stock of discovery. For it was obviously incumbent on all such adventurers, to confine their cruises within a moderate distance of the Spanish settlements; in the vicinity of which alone they could hope to exercise their commerce, or to execute their predatory and military operations. Accordingly, soon after emerging from the Strait, or completing the circuit of Tierra del Fuego, they began to hold a northerly course, to the uninhabited island of Juan Fernandez, their usual spot of rendezvous and refreshment. And, after ranging along the continent of America, from Chili to California, they either reversed their course back to the Atlantic; or, if they ventured to extend their voyage, by stretching over to Asia, they never thought of trying experiments in the unfrequented and unexplored parts of the ocean; but chose the beaten path (if the expression may be used), within the limits of which it was likely they might meet with a Philippine galleon, to make their voyage profitable to themselves; but could have little prospect, if they had been desirous, of making it useful to the world, by gaining any accession of new land to the map of the world. By the natural operation of these causes, it could not but happen, that little progress should be made toward obtaining a full and accurate knowledge of the South Pacific Ocean. Something, however, had been attempted by the industrious and once enterprising Dutch; to whom we are indebted for three voyages, undertaken for the purposes of discovery; and whose researches, in the southern latitudes of this ocean, are much better ascertained than are those of the earlier Spanish navigators above mentioned. Le Maire and Schouten, in 1616, and Roggewein, in 1722, wisely judging, that nothing new could be gained by adhering to the usual passage on the north side of the line, traversed this ocean from Cape Horn to the East Indies, crossing the South tropic; a space which had been so seldom, and so ineffectually visited; though popular belief, fortified by philosophical speculation, expected there to reap the richest harvest of discovery.