So much for the highly interesting chart of Hessel Gerritsz of the year 1627. If we compare with it the revised edition of the 1618 chart, we are struck by the increase of our forefathers' knowledge of the south-west coast. This revised edition gives the entire coast-line down to the islands of St. François and St. Pieter (133° 30' E. Long. Greenwich), still figuring in the maps of our day: the Land of Pieter Nuyts, discovered by the ship het Gulden Zeepaard in 1627.