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 142 first thirty years of the seventeenth century the Dutch followed the west coast of Australia with as much industry as the Portuguese had done with the west coast of Africa, leaving up to the present day signs of their explorations in the names of islands, bays, and capes. Dirk Hartog, in the Endraaght, discovered that Land which is named after his ship, and the cape and roadstead named after himself, in 1616. Jan Edels left his name upon the western coast in 1619; while, three years later, a ship named the Lioness or Leeuwin reached the most western point of the continent, to which its name is still attached. Five years later, in 1627, De Nuyts coasted round the south coast of Australia; while in the same year a Dutch commander named Carpenter discovered and gave his name to the immense indentation still known as the Gulf of Carpentaria.

But still more important discoveries were made in 1642 by an expedition sent out from Batavia under Abel Janssen Tasman to investigate the real extent of the southern land. After the voyages of the Leeuwin and De Nuyts it was seen that the southern coast of the new land trended to the east, instead of working round to the west, as would have been the case if Ptolemy's views had been correct. Tasman's problem was to discover whether it was connected with the great southern land assumed to lie to the south of South America. Tasman first sailed from Mauritius, and then directing his course to the south-east, going much more south than Cape Leeuwin, at last reached land in latitude 43.30° and longitude 163.50°. This he called Van Diemen's Land, after the name of the Governor-General of Batavia, and it was assumed that this joined on to the