Leeuwin, surveyed in 1622 [****]. Looking
at the coast more closely still, we find in about 29 deg. 30, S. Lat. the
name Tortelduyff (Turtle Dove Island), to the south of Houtmans Abrolhos,
an addition to the chart dating from about 1624 [*****].

[* See the documents sub No. XI (pp. 14 ff.). If NORDENSKIOeLD had known
these documents, he would have withheld the second alinea on p. 199 of
his interesting _Periplus_.--The doubts, also, concerning Frederik De
Houtman's share in the discoveries on the west-coast of Australia,
expressed by COLLINGRIDGE (_Discovery_ p. 304), CALVERT (_Discovery_, p.
25), and others, are now likely to be set at rest.]

[** They were then held to lie in 28 deg. 46'. On this point see also the
documents of PELSAERT'S shipwreck (No. XXIII, pp. 55 ff).]

[*** About this latitude, between 32 deg. and 33 deg. S. Lat., also De Houtman
and Dedel estimated themselves to be, when they first came upon land.
They afterwards ran on on a northerly course.]

[**** See the documents sub No. XII (p. 17).]

[***** See No. XVI (p. 50) below, and the highly curious charts Nos. Nos.
16 and 17.]

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. Francois and St. Pieter (133 deg. 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 [*].

[* See No. XVIII (p. 51) below.]

North of Willemsrivier, this so-called 1618 chart has still another
addition, _viz_. G. F. De Witsland, discovered in 1628 by the ship Vianen
commanded by G. F. De Witt [*]. In this case, too, it is difficult to
determine exactly the longitudes between which the coast-line thus
designated is situated. [**] But with great distinctness the chart
exhibits the chain of islands of which the Monte Bello and tha Barrow
islands are the principal, and besides, certain islands of the Dampier
Archipelago, afterwards so called after the celebrated English navigator.
I would have these observations looked upon as hints towards the more
accurate determination of the site of this De Wit's land, and they may be
of the more value since the small scale of the chart renders an exact
determination of it exceedingly difficult.