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 deg.

and longitude 163.50 deg..

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 land already discovered by De Nuyts.

Sailing farther to the eastward, Tasman came out into the open sea again, and thus appeared to prove that the newly discovered land was not connected with the great unknown continent round the south pole.
But he soon came across land which might possibly answer to that description, and he called it Staaten Land, in honour of the States-General of the Netherlands.